21091278384

Names of 21091278384

• Cardinal: 21091278384 can be written as Twenty-one billion, ninety-one million, two hundred seventy-eight thousand, three hundred eighty-four.

Scientific notation

• Scientific notation: 2.1091278384 × 10¹⁰

Factors of 21091278384

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 146

Divisors of 21091278384

• Number of divisors d(n): 270
• Complete list of divisors:
  1 2 3 4 6 8 9 11 12 16 18 22 24 33 36 41 44 48 66 72 82 88 89 99 123 132 144 164 176 178 198 246 264 267 328 356 369 396 451 492 528 534 656 712 738 792 801 902 979 984 1068 1353 1424 1476 1584 1602 1681 1804 1958 1968 2136 2706 2937 2952 3204 3362 3608 3649 3916 4059 4272 5043 5412 5874 5904 6408 6724 7216 7298 7832 7921 8118 8811 10086 10824 10947 11748 12816 13448 14596 15129 15664 15842 16236 17622 18491 20172 21648 21894 23496 23763 26896 29192 30258 31684 32472 32841 35244 36982 40139 40344 43788 46992 47526 55473 58384 60516 63368 64944 65682 70488 71289 73964 80278 80688 87131 87576 95052 110946 120417 121032 126736 131364 140976 142578 147928 149609 160556 166419 174262 175152 190104 221892 240834 242064 261393 262728 285156 295856 299218 321112 324761 332838 348524 361251 380208 443784 448827 481668 522786 525456 570312 598436 642224 649522 665676 697048 722502 784179 887568 897654 963336 974283 1045572 1140624 1196872 1299044 1331352 1346481 1394096 1445004 1568358 1645699 1795308 1926672 1948566 2091144 2393744 2598088 2662704 2692962 2890008 2922849 3136716 3291398 3572371 3590616 3897132 4182288 4937097 5196176 5385924 5780016 5845698 6273432 6582796 7144742 7181232 7794264 9874194 10717113 10771848 11691396 12546864 13165592 13315201 14289484 14811291 15588528 19748388 21434226 21543696 23382792 26331184 26630402 28578968 29622582 32151339 39496776 39945603 42868452 46765584 53260804 57157936 59245164 64302678 78993552 79891206 85736904 106521608 118490328 119836809 128605356 146467211 159782412 171473808 213043216 236980656 239673618 257210712 292934422 319564824 439401633 479347236 514421424 585868844 639129648 878803266 958694472 1171737688 1318204899 1757606532 1917388944 2343475376 2636409798 3515213064 5272819596 7030426128 10545639192 21091278384
• Sum of all divisors σ(n): 66751080708
• Sum of proper divisors (its aliquot sum) s(n): 45659802324
• 21091278384 is an abundant number, because the sum of its proper divisors (45659802324) is greater than itself. Its abundance is 24568523940

Bases of 21091278384

• Binary: 10011101001001000110101111000110000₂
• Hexadecimal: 0x4E9235E30
• Base-36: 9OT7AK0

Squares and roots of 21091278384

• 21091278384 squared (21091278384²) is 444842023871385651456
• 21091278384 cubed (21091278384³) is 9382286962373368186681690927104
• The square root of 21091278384 is 145228.3663200823
• The cube root of 21091278384 is 2762.9157025953

Scales and comparisons

• 21,091,278,384 seconds is equal to 670 years, 33 weeks, 1 day, 26 minutes, 24 seconds.
• To count from 1 to 21,091,278,384 would take you about one thousand, three hundred forty-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 21091278384 cubic inches would be around 230.2 feet tall.

Recreational maths with 21091278384

• 21091278384 backwards is 48387219012
• The number of decimal digits it has is: 11
• The sum of 21091278384's digits is 45
• More coming soon!