21720999552

Names of 21720999552

• Cardinal: 21720999552 can be written as Twenty-one billion, seven hundred twenty million, nine hundred ninety-nine thousand, five hundred fifty-two.

Scientific notation

• Scientific notation: 2.1720999552 × 10¹⁰

Factors of 21720999552

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 27990

Divisors of 21720999552

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 16 17 21 24 28 32 34 42 48 51 56 64 68 84 96 102 112 119 128 136 168 192 204 224 238 272 289 336 357 384 408 448 476 544 578 672 714 816 867 896 952 1088 1156 1344 1428 1632 1734 1904 2023 2176 2312 2688 2856 3264 3468 3808 4046 4624 5712 6069 6528 6936 7616 8092 9248 11424 12138 13872 15232 16184 18496 22848 24276 27744 27961 32368 36992 45696 48552 55488 55922 64736 83883 97104 110976 111844 129472 167766 194208 195727 223688 258944 335532 388416 391454 447376 475337 587181 671064 776832 782908 894752 950674 1174362 1342128 1426011 1565816 1789504 1901348 2348724 2684256 2852022 3131632 3327359 3579008 3802696 4697448 5368512 5704044 6263264 6654718 7605392 8080729 9394896 9982077 10737024 11408088 12526528 13309436 15210784 16161458 18789792 19964154 22816176 24242187 25053056 26618872 30421568 32322916 37579584 39928308 45632352 48484374 53237744 56565103 60843136 64645832 75159168 79856616 91264704 96968748 106475488 113130206 129291664 159713232 169695309 182529408 193937496 212950976 226260412 258583328 319426464 339390618 387874992 425901952 452520824 517166656 638852928 678781236 775749984 905041648 1034333312 1277705856 1357562472 1551499968 1810083296 2715124944 3102999936 3620166592 5430249888 7240333184 10860499776 21720999552
• Sum of all divisors σ(n): 70048165440
• Sum of proper divisors (its aliquot sum) s(n): 48327165888
• 21720999552 is an abundant number, because the sum of its proper divisors (48327165888) is greater than itself. Its abundance is 26606166336

Bases of 21720999552

• Binary: 10100001110101011000010011010000000₂
• Hexadecimal: 0x50EAC2680
• Base-36: 9Z84EIO

Squares and roots of 21720999552

• 21720999552 squared (21720999552²) is 471801821537984200704
• 21720999552 cubed (21720999552³) is 10248007154259338774474662084608
• The square root of 21720999552 is 147380.4585146891
• The cube root of 21720999552 is 2790.1438992595

Scales and comparisons

• 21,720,999,552 seconds is equal to 690 years, 34 weeks, 2 days, 10 hours, 59 minutes, 12 seconds.
• To count from 1 to 21,720,999,552 would take you about one thousand, three hundred eighty-one 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 21720999552 cubic inches would be around 232.5 feet tall.

Recreational maths with 21720999552

• 21720999552 backwards is 25599902712
• 21720999552 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21720999552's digits is 51
• More coming soon!