21405896736

Names of 21405896736

• Cardinal: 21405896736 can be written as Twenty-one billion, four hundred five million, eight hundred ninety-six thousand, seven hundred thirty-six.

Scientific notation

• Scientific notation: 2.1405896736 × 10¹⁰

Factors of 21405896736

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 508

Divisors of 21405896736

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 16 19 21 24 28 32 38 42 43 48 56 57 76 84 86 96 112 114 127 129 133 152 168 172 224 228 254 258 266 301 304 307 336 344 381 399 456 508 516 532 602 608 614 672 688 762 798 817 889 903 912 921 1016 1032 1064 1204 1228 1376 1524 1596 1634 1778 1806 1824 1842 2032 2064 2128 2149 2408 2413 2451 2456 2667 3048 3192 3268 3556 3612 3684 4064 4128 4256 4298 4816 4826 4902 4912 5334 5461 5719 5833 6096 6384 6447 6536 7112 7224 7239 7368 8596 9632 9652 9804 9824 10668 10922 11438 11666 12192 12768 12894 13072 13201 14224 14448 14478 14736 16383 16891 17157 17192 17499 19304 19608 21336 21844 22876 23332 25788 26144 26402 28448 28896 28956 29472 32766 33782 34314 34384 34998 38227 38608 38989 39216 39603 40831 42672 43688 45752 46664 50673 51576 52804 57912 65532 67564 68628 68768 69996 76454 77216 77978 78432 79206 81662 85344 87376 91504 92407 93328 101346 103152 103759 105608 114681 115824 116967 122493 131064 135128 137256 139992 152908 155956 158412 163324 174752 183008 184814 186656 202692 206304 207518 211216 229362 231648 233934 244986 250819 262128 270256 272923 274512 277221 279984 305816 311277 311912 316824 326648 369628 405384 415036 422432 458724 467868 489972 501638 524256 540512 545846 549024 554442 559968 611632 622554 623824 633648 653296 726313 739256 740791 752457 810768 818769 830072 917448 935736 979944 1003276 1091692 1108884 1223264 1245108 1247648 1267296 1306592 1452626 1478512 1481582 1504914 1621536 1637538 1660144 1676527 1755733 1834896 1871472 1959888 2006552 2178939 2183384 2217768 2222373 2490216 2905252 2957024 2963164 3009828 3275076 3320288 3353054 3511466 3669792 3742944 3919776 4013104 4357878 4366768 4435536 4444746 4980432 5029581 5185537 5267199 5810504 5926328 6019656 6550152 6706108 7022932 8026208 8715756 8733536 8871072 8889492 9960864 10059162 10371074 10534398 11621008 11735689 11852656 12039312 13100304 13412216 14045864 15556611 17431512 17778984 20118324 20742148 21068796 23242016 23471378 23705312 24078624 26200608 26824432 28091728 31113222 31854013 34863024 35207067 35557968 40236648 41484296 42137592 46942756 53648864 56183456 62226444 63708026 69726048 70414134 71115936 80473296 82968592 84275184 93885512 95562039 124452888 127416052 140828268 160946592 165937184 168550368 187771024 191124078 222978091 248905776 254832104 281656536 375542048 382248156 445956182 497811552 509664208 563313072 668934273 764496312 891912364 1019328416 1126626144 1337868546 1528992624 1783824728 2675737092 3057985248 3567649456 5351474184 7135298912 10702948368 21405896736
• Sum of all divisors σ(n): 69941329920
• Sum of proper divisors (its aliquot sum) s(n): 48535433184
• 21405896736 is an abundant number, because the sum of its proper divisors (48535433184) is greater than itself. Its abundance is 27129536448

Bases of 21405896736

• Binary: 10011111011111001000001000000100000₂
• Hexadecimal: 0x4FBE41020
• Base-36: 9U0INMO

Squares and roots of 21405896736

• 21405896736 squared (21405896736²) is 458212415072295453696
• 21405896736 cubed (21405896736³) is 9808447640190726456298845536256
• The square root of 21405896736 is 146307.5416238001
• The cube root of 21405896736 is 2776.5860796681

Scales and comparisons

• 21,405,896,736 seconds is equal to 680 years, 33 weeks, 2 days, 10 hours, 25 minutes, 36 seconds.
• To count from 1 to 21,405,896,736 would take you about one thousand, three hundred sixty-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 21405896736 cubic inches would be around 231.4 feet tall.

Recreational maths with 21405896736

• 21405896736 backwards is 63769850412
• The number of decimal digits it has is: 11
• The sum of 21405896736's digits is 51
• More coming soon!