21387851232

Names of 21387851232

• Cardinal: 21387851232 can be written as Twenty-one billion, three hundred eighty-seven million, eight hundred fifty-one thousand, two hundred thirty-two.

Scientific notation

• Scientific notation: 2.1387851232 × 10¹⁰

Factors of 21387851232

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 19625

Divisors of 21387851232

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 6 8 11 12 16 17 22 24 32 33 34 44 48 51 61 66 68 88 96 102 122 132 136 176 183 187 204 244 264 272 352 366 374 408 488 528 544 561 671 732 748 816 976 1037 1056 1122 1342 1464 1496 1632 1952 2013 2074 2244 2684 2928 2992 3111 4026 4148 4488 5368 5856 5984 6222 8052 8296 8976 10736 11407 12444 16104 16592 17952 19531 21472 22814 24888 32208 33184 34221 39062 45628 49776 58593 64416 68442 78124 91256 99552 117186 136884 156248 182512 214841 234372 273768 312496 332027 365024 429682 468744 547536 624992 644523 664054 859364 937488 996081 1095072 1191391 1289046 1328108 1718728 1874976 1992162 2382782 2578092 2656216 3437456 3574173 3652297 3984324 4765564 5156184 5312432 6874912 7148346 7304594 7968648 9531128 10312368 10624864 10956891 13105301 14296692 14609188 15937296 19062256 20253647 20624736 21913782 26210602 28593384 29218376 31874592 38124512 39315903 40507294 43827564 52421204 57186768 58436752 60760941 78631806 81014588 87655128 104842408 114373536 116873504 121521882 157263612 162029176 175310256 209684816 222790117 243043764 314527224 324058352 350620512 419369632 445580234 486087528 629054448 648116704 668370351 891160468 972175056 1258108896 1336740702 1782320936 1944350112 2673481404 3564641872 5346962808 7129283744 10693925616 21387851232
• Sum of all divisors σ(n): 65916281088
• Sum of proper divisors (its aliquot sum) s(n): 44528429856
• 21387851232 is an abundant number, because the sum of its proper divisors (44528429856) is greater than itself. Its abundance is 23140578624

Bases of 21387851232

• Binary: 10011111010110100001011010111100000₂
• Hexadecimal: 0x4FAD0B5E0
• Base-36: 9TPRVMO

Squares and roots of 21387851232

• 21387851232 squared (21387851232²) is 457440180322163917824
• 21387851232 cubed (21387851232³) is 9783662524269695706737985159168
• The square root of 21387851232 is 146245.8588541913
• The cube root of 21387851232 is 2775.8056252267

Scales and comparisons

• 21,387,851,232 seconds is equal to 680 years, 3 weeks, 3 days, 13 hours, 47 minutes, 12 seconds.
• To count from 1 to 21,387,851,232 would take you about one thousand, three hundred sixty 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 21387851232 cubic inches would be around 231.3 feet tall.

Recreational maths with 21387851232

• 21387851232 backwards is 23215878312
• The number of decimal digits it has is: 11
• The sum of 21387851232's digits is 42
• More coming soon!