21453499721728

Names of 21453499721728

• Cardinal: 21453499721728 can be written as Twenty-one trillion, four hundred fifty-three billion, four hundred ninety-nine million, seven hundred twenty-one thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 2.1453499721728 × 10¹³

Factors of 21453499721728

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 4150

Divisors of 21453499721728

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 4 8 16 32 64 67 97 128 134 194 256 268 388 457 512 536 776 914 1024 1072 1552 1828 2048 2144 3104 3527 3656 4288 6208 6499 7054 7312 8576 12416 12998 14108 14624 17152 24832 25996 28216 29248 30619 34304 44329 49664 51992 56432 58496 61238 68608 88658 99328 103984 112864 116992 122476 137216 177316 198656 207968 225728 233984 236309 244952 342119 354632 415936 451456 467968 472618 489904 684238 709264 831872 902912 935936 945236 979808 1368476 1418528 1611839 1663744 1805824 1890472 1959616 2736952 2837056 2970043 3223678 3327488 3611648 3780944 3919232 5473904 5674112 5940086 6447356 6654976 7223296 7561888 7838464 10947808 11348224 11880172 12894712 13309952 15123776 15676928 21895616 22696448 22921973 23760344 25789424 30247552 31353856 43791232 45392896 45843946 47520688 51578848 60495104 62707712 87582464 90785792 91687892 95041376 103157696 107993213 120990208 156348383 175164928 183375784 190082752 206315392 215986426 241980416 312696766 350329856 366751568 380165504 412630784 431972852 483960832 625393532 700659712 733503136 760331008 825261568 863945704 1250787064 1467006272 1520662016 1650523136 1727891408 2501574128 2934012544 3041324032 3301046272 3455782816 5003148256 5868025088 6082648064 6911565632 10006296512 10475341661 11736050176 13823131264 20012593024 20950683322 23472100352 27646262528 40025186048 41901366644 46944200704 55292525056 80050372096 83802733288 110585050112 160100744192 167605466576 221170100224 320201488384 335210933152 670421866304 1340843732608 2681687465216 5363374930432 10726749860864 21453499721728
• Sum of all divisors σ(n): 44094350401920
• Sum of proper divisors (its aliquot sum) s(n): 22640850680192
• 21453499721728 is an abundant number, because the sum of its proper divisors (22640850680192) is greater than itself. Its abundance is 1187350958464

Bases of 21453499721728

• Binary: 100111000001100001000001110101110100000000000₂
• Hexadecimal: 0x1383083AE800
• Base-36: 7LRLNTKHS

Squares and roots of 21453499721728

• 21453499721728 squared (21453499721728²) is 460252650310183373435305984
• 21453499721728 cubed (21453499721728³) is 9874030105354093494878989235154533220352
• The square root of 21453499721728 is 4631792.2796394917
• The cube root of 21453499721728 is 27786.4277044613

Scales and comparisons

• 21,453,499,721,728 seconds is equal to 682,154 years, 48 weeks, 2 days, 22 hours, 15 minutes, 28 seconds.
• To count from 1 to 21,453,499,721,728 would take you about one million, seven hundred five thousand, three hundred eighty-seven 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 21453499721728 cubic inches would be around 2315.5 feet tall.

Recreational maths with 21453499721728

• 21453499721728 backwards is 82712799435412
• 21453499721728 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21453499721728's digits is 64
• More coming soon!