21457299968

Names of 21457299968

• Cardinal: 21457299968 can be written as Twenty-one billion, four hundred fifty-seven million, two hundred ninety-nine thousand, nine hundred sixty-eight.

Scientific notation

• Scientific notation: 2.1457299968 × 10¹⁰

Factors of 21457299968

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 210

Divisors of 21457299968

• Number of divisors d(n): 240
• Complete list of divisors:
  1 2 4 8 13 16 26 32 43 52 64 73 79 86 104 128 146 158 169 172 208 256 292 316 338 344 416 512 559 584 632 676 688 832 949 1027 1118 1168 1264 1352 1376 1664 1898 2054 2236 2336 2528 2704 2752 3139 3328 3397 3796 4108 4472 4672 5056 5408 5504 5767 6278 6656 6794 7267 7592 8216 8944 9344 10112 10816 11008 11534 12337 12556 13351 13588 14534 15184 16432 17888 18688 20224 21632 22016 23068 24674 25112 26702 27176 29068 30368 32864 35776 37376 40448 40807 43264 44161 46136 49348 50224 53404 54352 58136 60736 65728 71552 74971 81614 86528 88322 92272 98696 100448 106808 108704 116272 121472 131456 143104 149942 163228 176644 184544 197392 200896 213616 217408 232544 242944 247981 262912 286208 299884 326456 353288 369088 394784 401792 427232 434816 465088 485888 495962 525824 530491 574093 599768 652912 706576 738176 789568 803584 854464 869632 930176 974623 991924 1060982 1148186 1199536 1305824 1413152 1476352 1579136 1607168 1708928 1739264 1860352 1949246 1983848 2121964 2296372 2399072 2611648 2826304 2952704 3158272 3223753 3417856 3720704 3898492 3967696 4243928 4592744 4798144 5223296 5652608 6316544 6447506 6835712 7796984 7935392 8487856 9185488 9596288 10446592 11305216 12895012 15593968 15870784 16975712 18370976 19192576 20893184 22610432 25790024 31187936 31741568 33951424 36741952 38385152 41908789 51580048 62375872 63483136 67902848 73483904 83817578 103160096 124751744 126966272 135805696 146967808 167635156 206320192 249503488 271611392 293935616 335270312 412640384 499006976 670540624 825280768 1341081248 1650561536 2682162496 5364324992 10728649984 21457299968
• Sum of all divisors σ(n): 48764200320
• Sum of proper divisors (its aliquot sum) s(n): 27306900352
• 21457299968 is an abundant number, because the sum of its proper divisors (27306900352) is greater than itself. Its abundance is 5849600384

Bases of 21457299968

• Binary: 10011111110111101000110101000000000₂
• Hexadecimal: 0x4FEF46A00
• Base-36: 9UV4EM8

Squares and roots of 21457299968

• 21457299968 squared (21457299968²) is 460415721916732801024
• 21457299968 cubed (21457299968³) is 9879278255150607630076825567232
• The square root of 21457299968 is 146483.1047185989
• The cube root of 21457299968 is 2778.8068292015

Scales and comparisons

• 21,457,299,968 seconds is equal to 682 years, 14 weeks, 2 days, 9 hours, 6 minutes, 8 seconds.
• To count from 1 to 21,457,299,968 would take you about one thousand, three hundred sixty-four 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 21457299968 cubic inches would be around 231.6 feet tall.

Recreational maths with 21457299968

• 21457299968 backwards is 86999275412
• The number of decimal digits it has is: 11
• The sum of 21457299968's digits is 62
• More coming soon!