90,000

90,000 (ninety thousand) is the natural number following 89,999 and preceding 90,001. It is the sum of the cubes of the first 24 positive integers, and is the square of 300.

← 89999 90000 90001 →
List of numbers — Integers ← 0 [[{{#expr:{{{1}}}*{{{factor}}}*1000}} (number)|{{#ifeq:{{{1}}}|10|→|{{#expr:{{{1}}}*{{{factor}}}}}k}}]] [[{{#expr:{{{1}}}*{{{factor}}}*1000}} (number)|{{#ifeq:{{{1}}}|10|→|{{#expr:{{{1}}}*{{{factor}}}}}k}}]] [[{{#expr:{{{1}}}*{{{factor}}}*1000}} (number)|{{#ifeq:{{{1}}}|10|→|{{#expr:{{{1}}}*{{{factor}}}}}k}}]] [[{{#expr:{{{1}}}*{{{factor}}}*1000}} (number)|{{#ifeq:{{{1}}}|10|→|{{#expr:{{{1}}}*{{{factor}}}}}k}}]] [[{{#expr:{{{1}}}*{{{factor}}}*1000}} (number)|{{#ifeq:{{{1}}}|10|→|{{#expr:{{{1}}}*{{{factor}}}}}k}}]] [[{{#expr:{{{1}}}*{{{factor}}}*1000}} (number)|{{#ifeq:{{{1}}}|10|→|{{#expr:{{{1}}}*{{{factor}}}}}k}}]] [[{{#expr:{{{1}}}*{{{factor}}}*1000}} (number)|{{#ifeq:{{{1}}}|10|→|{{#expr:{{{1}}}*{{{factor}}}}}k}}]] [[{{#expr:{{{1}}}*{{{factor}}}*1000}} (number)|{{#ifeq:{{{1}}}|10|→|{{#expr:{{{1}}}*{{{factor}}}}}k}}]] [[{{#expr:{{{1}}}*{{{factor}}}*1000}} (number)|{{#ifeq:{{{1}}}|10|→|{{#expr:{{{1}}}*{{{factor}}}}}k}}]] [[{{#expr:{{{1}}}*{{{factor}}}*1000}} (number)|{{#ifeq:{{{1}}}|10|→|{{#expr:{{{1}}}*{{{factor}}}}}k}}]]
Cardinal	ninety thousand
Ordinal	90000th (ninety thousandth)
Factorization	2^4 × 3^2 × 5^4
Greek numeral	${\displaystyle {\stackrel {\theta }{\mathrm {M} }}}$
Roman numeral	XC
Binary	101011111100100002
Ternary	111201101003
Octal	2576208
Duodecimal	4410012
Hexadecimal	15F9016

Selected numbers in the range 90,000–99,999

90,001 to 90,999

• 90,625 – the only five-digit automorphic number: 90625² = 8212890625[1]

91,000 to 91,999

• 91,125 – 45³

93,000 to 93,999

• 93,312 – Leyland number: 6⁶ + 6⁶.[2] Also a 3-smooth number.

94,000 to 94,999

• 94,249 – palindromic square: 307²
• 94,932 – Leyland number: 7⁵ + 5⁷[2]

95,000 to 95,999

• 95,121 – Kaprekar number: 95121² = 9048004641; 90480 + 04641 = 95121[3]

96,000 to 96,999

• 96,557 – Markov number: 5² + 6466² + 96557² = 3 × 5 × 6466 × 96557[4]

97,000 to 97,999

• 97,336 – 46³

98,000 to 98,999

• 98,304 – 3-smooth number

99,000 to 99,999

• 99,066 – largest number whose square uses all of the decimal digits once: 99066² = 9814072356. It is also a rotationally symmetric ambigram in decimal.
• 99,991 - largest five-digit prime number
• 99,999 – repdigit, Kaprekar number: 99999² = 9999800001; 99998 + 00001 = 99999[3]

References

1. "Sloane's A003226 : Automorphic numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-16.
2. "Sloane's A076980 : Leyland numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-16.
3. "Sloane's A006886 : Kaprekar numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-16.
4. "Sloane's A002559 : Markoff (or Markov) numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-16.