21289144464

Names of 21289144464

• Cardinal: 21289144464 can be written as Twenty-one billion, two hundred eighty-nine million, one hundred forty-four thousand, four hundred sixty-four.

Scientific notation

• Scientific notation: 2.1289144464 × 10¹⁰

Factors of 21289144464

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 205

Divisors of 21289144464

• Number of divisors d(n): 315
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 27 28 36 42 48 49 54 56 63 72 81 84 98 108 112 126 144 147 162 168 189 193 196 216 243 252 294 324 336 378 386 392 432 441 486 504 567 579 588 648 729 756 772 784 882 972 1008 1134 1158 1176 1296 1323 1351 1458 1512 1544 1701 1737 1764 1944 2268 2316 2352 2646 2702 2916 3024 3088 3402 3474 3528 3888 3969 4053 4536 4632 5103 5211 5292 5404 5832 6804 6948 7056 7938 8106 9072 9264 9457 10206 10422 10584 10808 11664 11907 12159 13608 13896 15633 15876 16212 18914 20412 20844 21168 21616 23814 24318 27216 27792 28371 31266 31752 32424 35721 36477 37249 37828 40824 41688 46899 47628 48636 56742 62532 63504 64848 71442 72954 74498 75656 81648 83376 85113 93798 95256 97272 109431 111747 113484 125064 140697 142884 145908 148996 151312 170226 187596 190512 194544 218862 223494 226968 250128 255339 260743 281394 285768 291816 297992 328293 335241 340452 375192 437724 446988 453936 510678 521486 562788 571536 583632 595984 656586 670482 680904 750384 766017 782229 875448 893976 984879 1005723 1021356 1042972 1125576 1313172 1340964 1361808 1532034 1564458 1750896 1787952 1825201 1969758 2011446 2042712 2085944 2251152 2298051 2346687 2626344 2681928 3017169 3064068 3128916 3650402 3939516 4022892 4085424 4171888 4596102 4693374 5252688 5363856 5475603 6034338 6128136 6257832 6894153 7040061 7300804 7879032 8045784 9051507 9192204 9386748 10951206 12068676 12256272 12515664 13788306 14080122 14601608 15758064 16091568 16426809 18103014 18384408 18773496 21120183 21902412 24137352 27154521 27576612 28160244 29203216 32853618 36206028 36768816 37546992 42240366 43804824 48274704 49280427 54309042 55153224 56320488 63360549 65707236 72412056 84480732 87609648 98560854 108618084 110306448 112640976 126721098 131414472 144824112 147841281 168961464 190081647 197121708 217236168 253442196 262828944 295682562 337922928 380163294 394243416 434472336 443523843 506884392 591365124 760326588 788486832 887047686 1013768784 1182730248 1330571529 1520653176 1774095372 2365460496 2661143058 3041306352 3548190744 5322286116 7096381488 10644572232 21289144464
• Sum of all divisors σ(n): 72314826633
• Sum of proper divisors (its aliquot sum) s(n): 51025682169
• 21289144464 is an abundant number, because the sum of its proper divisors (51025682169) is greater than itself. Its abundance is 29736537705

Bases of 21289144464

• Binary: 10011110100111011101001000010010000₂
• Hexadecimal: 0x4F4EE9090
• Base-36: 9S30900

Squares and roots of 21289144464

• 21289144464 squared (21289144464²) is 453227672009061847296
• 21289144464 cubed (21289144464³) is 9648829384483326784195251769344
• 21289144464 is a perfect square number. Its square root is 145908
• The cube root of 21289144464 is 2771.5288455427

Scales and comparisons

• 21,289,144,464 seconds is equal to 676 years, 48 weeks, 2 days, 3 hours, 14 minutes, 24 seconds.
• To count from 1 to 21,289,144,464 would take you about one thousand, three hundred fifty-three 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 21289144464 cubic inches would be around 231 feet tall.

Recreational maths with 21289144464

• 21289144464 backwards is 46444198212
• The number of decimal digits it has is: 11
• The sum of 21289144464's digits is 45
• More coming soon!