21492818640

Names of 21492818640

• Cardinal: 21492818640 can be written as Twenty-one billion, four hundred ninety-two million, eight hundred eighteen thousand, six hundred forty.

Scientific notation

• Scientific notation: 2.149281864 × 10¹⁰

Factors of 21492818640

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 62644

Divisors of 21492818640

• Number of divisors d(n): 200
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 36 40 45 48 53 54 60 72 80 81 90 106 108 120 135 144 159 162 180 212 216 240 265 270 318 324 360 405 424 432 477 530 540 636 648 720 795 810 848 954 1060 1080 1272 1296 1431 1590 1620 1908 2120 2160 2385 2544 2862 3180 3240 3816 4240 4293 4770 5724 6360 6480 7155 7632 8586 9540 11448 12720 14310 17172 19080 21465 22896 28620 34344 38160 42930 57240 62581 68688 85860 114480 125162 171720 187743 250324 312905 343440 375486 500648 563229 625810 750972 938715 1001296 1126458 1251620 1501944 1689687 1877430 2252916 2503240 2816145 3003888 3316793 3379374 3754860 4505832 5006480 5069061 5632290 6633586 6758748 7509720 8448435 9011664 9950379 10138122 11264580 13267172 13517496 15019440 16583965 16896870 19900758 20276244 22529160 25345305 26534344 27034992 29851137 33167930 33793740 39801516 40552488 45058320 49751895 50690610 53068688 59702274 66335860 67587480 79603032 81104976 89553411 99503790 101381220 119404548 132671720 135174960 149255685 159206064 179106822 199007580 202762440 238809096 265343440 268660233 298511370 358213644 398015160 405524880 447767055 477618192 537320466 597022740 716427288 796030320 895534110 1074640932 1194045480 1343301165 1432854576 1791068220 2149281864 2388090960 2686602330 3582136440 4298563728 5373204660 7164272880 10746409320 21492818640
• Sum of all divisors σ(n): 76057406568
• Sum of proper divisors (its aliquot sum) s(n): 54564587928
• 21492818640 is an abundant number, because the sum of its proper divisors (54564587928) is greater than itself. Its abundance is 33071769288

Bases of 21492818640

• Binary: 10100000001000100100110001011010000₂
• Hexadecimal: 0x5011262D0
• Base-36: 9VG9P00

Squares and roots of 21492818640

• 21492818640 squared (21492818640²) is 461941253091931449600
• 21492818640 cubed (21492818640³) is 9928419575039221893565100544000
• The square root of 21492818640 is 146604.2927065915
• The cube root of 21492818640 is 2780.3392543555

Scales and comparisons

• 21,492,818,640 seconds is equal to 683 years, 21 weeks, 11 hours, 24 minutes.
• To count from 1 to 21,492,818,640 would take you about one thousand, three hundred sixty-six years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 21492818640 cubic inches would be around 231.7 feet tall.

Recreational maths with 21492818640

• 21492818640 backwards is 04681829412
• 21492818640 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21492818640's digits is 45
• More coming soon!