21338787015

Names of 21338787015

• Cardinal: 21338787015 can be written as Twenty-one billion, three hundred thirty-eight million, seven hundred eighty-seven thousand and fifteen.

Scientific notation

• Scientific notation: 2.1338787015 × 10¹⁰

Factors of 21338787015

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 299

Divisors of 21338787015

• Number of divisors d(n): 320
• Complete list of divisors:
  1 3 5 7 9 13 15 21 27 35 39 45 47 63 65 81 91 97 105 117 127 135 141 189 195 235 273 291 315 329 351 381 405 423 455 485 567 585 611 635 679 705 819 873 889 945 987 1053 1143 1261 1269 1365 1455 1645 1651 1755 1833 1905 2037 2115 2457 2619 2667 2835 2961 3055 3395 3429 3783 3807 4095 4277 4365 4445 4559 4935 4953 5265 5499 5715 5969 6111 6305 6345 7371 7857 8001 8255 8827 8883 9165 10185 10287 11349 11557 12285 12319 12831 13095 13335 13677 14805 14859 16497 17145 17907 18333 18915 19035 21385 22795 24003 24765 26481 26649 27495 29845 30555 31913 34047 34671 36855 36957 38493 39285 40005 41031 41783 44135 44415 44577 49491 51435 53721 54999 56745 57785 59267 61595 64155 68385 72009 74295 77597 79443 82485 86233 89535 91665 95739 102141 104013 110871 115479 120015 123093 125349 132405 133245 133731 159565 160147 161163 170235 173355 177801 184785 192465 205155 208915 222885 232791 238329 247455 258699 268605 274995 287217 296335 312039 332613 346437 360045 369279 376047 387985 397215 414869 431165 478695 480441 483489 510705 520065 533403 543179 554355 577395 578993 615465 626745 668655 698373 714987 776097 800735 805815 861651 889005 936117 997839 1121029 1128141 1163955 1191645 1244607 1293495 1436085 1441323 1560195 1600209 1629537 1663065 1732185 1736979 1846395 1880235 2074345 2095119 2328291 2402205 2417445 2584953 2667015 2715895 2894965 3363087 3384423 3491865 3574935 3733821 3880485 4052951 4308255 4323969 4680585 4800627 4888611 4989195 5210937 5605145 5640705 6223035 6285357 6984873 7206615 7526909 8001045 8147685 8684895 10089261 10475595 11201463 11641455 12158853 12924765 12971907 14665833 15632811 16815435 16922115 18669105 20264755 21619845 22580727 24003135 24443055 26054685 30267783 31426785 33604389 34924365 36476559 37634545 43997499 46898433 50446305 52688363 56007315 60794265 64859535 67742181 73329165 78164055 90803349 109429677 112903635 151338915 158065089 168021945 182382795 203226543 219987495 234492165 263441815 328289031 338710905 454016745 474195267 547148385 609679629 790325445 1016132715 1422585801 1641445155 2370976335 3048398145 4267757403 7112929005 21338787015
• Sum of all divisors σ(n): 48958930944
• Sum of proper divisors (its aliquot sum) s(n): 27620143929
• 21338787015 is an abundant number, because the sum of its proper divisors (27620143929) is greater than itself. Its abundance is 6281356914

Bases of 21338787015

• Binary: 10011110111111001000000110011000111₂
• Hexadecimal: 0x4F7E40CC7
• Base-36: 9SWK9FR

Squares and roots of 21338787015

• 21338787015 squared (21338787015²) is 455343831271532610225
• 21338787015 cubed (21338787015³) is 9716485034097331002218286228375
• The square root of 21338787015 is 146078.0168779683
• The cube root of 21338787015 is 2773.6814129957

Scales and comparisons

• 21,338,787,015 seconds is equal to 678 years, 26 weeks, 2 days, 16 hours, 50 minutes, 15 seconds.
• To count from 1 to 21,338,787,015 would take you about one thousand, three hundred fifty-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 21338787015 cubic inches would be around 231.1 feet tall.

Recreational maths with 21338787015

• 21338787015 backwards is 51078783312
• 21338787015 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21338787015's digits is 45
• More coming soon!