21018292736

Names of 21018292736

• Cardinal: 21018292736 can be written as Twenty-one billion, eighteen million, two hundred ninety-two thousand, seven hundred thirty-six.

Scientific notation

• Scientific notation: 2.1018292736 × 10¹⁰

Factors of 21018292736

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 954

Divisors of 21018292736

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 4 7 8 14 16 28 32 56 61 64 112 122 127 128 224 244 254 256 427 448 488 508 512 757 854 889 896 976 1016 1514 1708 1778 1792 1952 2032 3028 3416 3556 3584 3904 4064 5299 6056 6832 7112 7747 7808 8128 10598 12112 13664 14224 15494 15616 16256 21196 24224 27328 28448 30988 31232 32512 42392 46177 48448 54229 54656 56896 61976 65024 84784 92354 96139 96896 108458 109312 113792 123952 169568 184708 192278 193792 216916 218624 227584 247904 323239 339136 369416 384556 387584 433832 455168 495808 646478 672973 678272 738832 769112 867664 991616 1292956 1345946 1356544 1477664 1538224 1735328 1983232 2585912 2691892 2713088 2955328 3076448 3470656 3966464 5171824 5383784 5864479 5910656 6152896 6941312 10343648 10767568 11728958 11821312 12305792 13882624 20687296 21535136 23457916 23642624 24611584 27765248 41051353 41374592 43070272 46915832 49223168 82102706 82749184 86140544 93831664 164205412 165498368 172281088 187663328 328410824 344562176 375326656 656821648 750653312 1313643296 1501306624 2627286592 3002613248 5254573184 10509146368 21018292736
• Sum of all divisors σ(n): 49230753792
• Sum of proper divisors (its aliquot sum) s(n): 28212461056
• 21018292736 is an abundant number, because the sum of its proper divisors (28212461056) is greater than itself. Its abundance is 7194168320

Bases of 21018292736

• Binary: 10011100100110010011011001000000000₂
• Hexadecimal: 0x4E4C9B200
• Base-36: 9NLQYGW

Squares and roots of 21018292736

• 21018292736 squared (21018292736²) is 441768629536190365696
• 21018292736 cubed (21018292736³) is 9285222377173185012421420384256
• The square root of 21018292736 is 144976.8696585769
• The cube root of 21018292736 is 2759.7250275665

Scales and comparisons

• 21,018,292,736 seconds is equal to 668 years, 16 weeks, 3 days, 6 hours, 38 minutes, 56 seconds.
• To count from 1 to 21,018,292,736 would take you about one thousand, three hundred thirty-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 21018292736 cubic inches would be around 230 feet tall.

Recreational maths with 21018292736

• 21018292736 backwards is 63729281012
• The number of decimal digits it has is: 11
• The sum of 21018292736's digits is 41
• More coming soon!