21028761216

Names of 21028761216

• Cardinal: 21028761216 can be written as Twenty-one billion, twenty-eight million, seven hundred sixty-one thousand, two hundred sixteen.

Scientific notation

• Scientific notation: 2.1028761216 × 10¹⁰

Factors of 21028761216

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 342

Divisors of 21028761216

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 27 31 32 36 48 54 62 64 72 81 93 96 108 113 124 128 144 162 186 192 193 216 226 243 248 279 288 324 339 372 384 386 432 452 486 496 558 576 579 648 678 744 772 837 864 904 972 992 1017 1116 1152 1158 1296 1356 1488 1544 1674 1728 1737 1808 1944 1984 2034 2232 2316 2511 2592 2712 2976 3051 3088 3348 3456 3474 3503 3616 3888 3968 4068 4464 4632 5022 5184 5211 5424 5952 5983 6102 6176 6696 6948 7006 7232 7533 7776 8136 8928 9153 9264 10044 10368 10422 10509 10848 11904 11966 12204 12352 13392 13896 14012 14464 15066 15552 15633 16272 17856 17949 18306 18528 20088 20844 21018 21696 21809 23932 24408 24704 26784 27459 27792 28024 30132 31104 31266 31527 32544 35712 35898 36612 37056 40176 41688 42036 43392 43618 46899 47864 48816 53568 53847 54918 55584 56048 60264 62532 63054 65088 65427 71796 73224 74112 80352 83376 84072 87236 93798 94581 95728 97632 107136 107694 109836 111168 112096 120528 125064 126108 130176 130854 143592 146448 160704 161541 166752 168144 174472 187596 189162 191456 195264 196281 215388 219672 222336 224192 241056 250128 252216 261708 283743 287184 292896 321408 323082 333504 336288 348944 375192 378324 382912 390528 392562 430776 439344 448384 482112 484623 500256 504432 523416 567486 574368 585792 588843 646164 667008 672576 676079 697888 750384 756648 765824 785124 851229 861552 878688 964224 969246 1000512 1008864 1046832 1134972 1148736 1171584 1177686 1292328 1345152 1352158 1395776 1453869 1500768 1513296 1570248 1702458 1723104 1757376 1766529 1938492 2001024 2017728 2028237 2093664 2269944 2297472 2355372 2584656 2704316 2791552 2907738 3001536 3026592 3140496 3404916 3446208 3514752 3533058 3876984 4035456 4056474 4187328 4539888 4710744 5169312 5299587 5408632 5815476 6003072 6053184 6084711 6280992 6809832 6892416 7066116 7753968 8112948 8374656 9079776 9421488 10338624 10599174 10817264 11630952 12106368 12169422 12561984 13619664 14132232 15507936 16225896 18159552 18254133 18842976 20677248 21198348 21634528 23261904 24338844 25123968 27239328 28264464 31015872 32451792 36319104 36508266 37685952 42396696 43269056 46523808 48677688 54478656 54762399 56528928 62031744 64903584 73016532 75371904 84793392 86538112 93047616 97355376 108957312 109524798 113057856 129807168 146033064 164287197 169586784 186095232 194710752 219049596 226115712 259614336 292066128 328574394 339173568 389421504 438099192 584132256 657148788 678347136 778843008 876198384 1168264512 1314297576 1752396768 2336529024 2628595152 3504793536 5257190304 7009587072 10514380608 21028761216
• Sum of all divisors σ(n): 65689827840
• Sum of proper divisors (its aliquot sum) s(n): 44661066624
• 21028761216 is an abundant number, because the sum of its proper divisors (44661066624) is greater than itself. Its abundance is 23632305408

Bases of 21028761216

• Binary: 10011100101011010010110111010000000₂
• Hexadecimal: 0x4E5696E80
• Base-36: 9NRZC00

Squares and roots of 21028761216

• 21028761216 squared (21028761216²) is 442208798279545798656
• 21028761216 cubed (21028761216³) is 9299103226634880216873037725696
• The square root of 21028761216 is 145012.9691303505
• The cube root of 21028761216 is 2760.1831258455

Scales and comparisons

• 21,028,761,216 seconds is equal to 668 years, 33 weeks, 5 days, 10 hours, 33 minutes, 36 seconds.
• To count from 1 to 21,028,761,216 would take you about one thousand, three hundred thirty-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 21028761216 cubic inches would be around 230 feet tall.

Recreational maths with 21028761216

• 21028761216 backwards is 61216782012
• 21028761216 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21028761216's digits is 36
• More coming soon!