21531381144

Names of 21531381144

• Cardinal: 21531381144 can be written as Twenty-one billion, five hundred thirty-one million, three hundred eighty-one thousand, one hundred forty-four.

Scientific notation

• Scientific notation: 2.1531381144 × 10¹⁰

Factors of 21531381144

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 2238

Divisors of 21531381144

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 3 4 6 7 8 12 13 14 17 21 24 26 28 34 39 42 51 52 56 68 78 84 91 102 104 119 136 156 168 182 204 221 238 273 307 312 357 364 408 442 476 546 614 663 714 728 884 921 952 1092 1228 1326 1428 1547 1768 1842 1889 2149 2184 2456 2652 2856 3094 3684 3778 3991 4298 4641 5219 5304 5667 6188 6447 7368 7556 7982 8596 9282 10438 11334 11973 12376 12894 13223 15112 15657 15964 17192 18564 20876 22668 23946 24557 25788 26446 27937 31314 31928 32113 36533 37128 39669 41752 45336 47892 49114 51576 52892 55874 62628 64226 67847 73066 73671 79338 83811 95784 96339 98228 105784 109599 111748 125256 128452 135694 146132 147342 158676 167622 171899 192678 196456 203541 219198 223496 224791 256904 271388 292264 294684 317352 335244 343798 385356 407082 417469 438396 449582 474929 515697 542776 579923 589368 670488 674373 687596 770712 814164 834938 876792 899164 949858 1031394 1159846 1252407 1348746 1375192 1424787 1628328 1669876 1739769 1798328 1899716 2062788 2319692 2504814 2697492 2849574 2922283 3339752 3479538 3799432 4059461 4125576 4639384 5009628 5394984 5699148 5844566 6959076 7538999 8118922 8766849 9858691 10019256 11398296 11689132 12178383 13918152 15077998 16237844 17533698 19717382 22616997 23378264 24356766 29576073 30155996 32475688 35067396 39434764 45233994 48713532 52772993 59152146 60311992 69010837 70134792 78869528 90467988 97427064 105545986 118304292 128162983 138021674 158318979 180935976 207032511 211091972 236608584 256325966 276043348 316637958 384488949 414065022 422183944 512651932 552086696 633275916 768977898 828130044 897140881 1025303864 1266551832 1537955796 1656260088 1794281762 2691422643 3075911592 3588563524 5382845286 7177127048 10765690572 21531381144
• Sum of all divisors σ(n): 70413235200
• Sum of proper divisors (its aliquot sum) s(n): 48881854056
• 21531381144 is an abundant number, because the sum of its proper divisors (48881854056) is greater than itself. Its abundance is 27350472912

Bases of 21531381144

• Binary: 10100000011010111101100110110011000₂
• Hexadecimal: 0x5035ECD98
• Base-36: 9W3880O

Squares and roots of 21531381144

• 21531381144 squared (21531381144²) is 463600373968198748736
• 21531381144 cubed (21531381144³) is 9981956350410222994178704233984
• The square root of 21531381144 is 146735.7527802955
• The cube root of 21531381144 is 2782.0010929177

Scales and comparisons

• 21,531,381,144 seconds is equal to 684 years, 32 weeks, 5 days, 19 hours, 12 minutes, 24 seconds.
• To count from 1 to 21,531,381,144 would take you about one thousand, three hundred sixty-nine 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 21531381144 cubic inches would be around 231.8 feet tall.

Recreational maths with 21531381144

• 21531381144 backwards is 44118313512
• The number of decimal digits it has is: 11
• The sum of 21531381144's digits is 33
• More coming soon!