21001613472

Names of 21001613472

• Cardinal: 21001613472 can be written as Twenty-one billion, one million, six hundred thirteen thousand, four hundred seventy-two.

Scientific notation

• Scientific notation: 2.1001613472 × 10¹⁰

Factors of 21001613472

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 4170

Divisors of 21001613472

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 27 28 29 32 36 42 48 54 56 58 63 72 84 87 96 108 112 116 126 144 168 174 189 203 216 224 232 252 261 288 336 348 378 406 432 464 504 522 609 672 696 756 783 812 841 864 928 1008 1044 1218 1392 1512 1566 1624 1682 1827 2016 2088 2436 2523 2784 3024 3132 3248 3364 3654 4129 4176 4872 5046 5481 5887 6048 6264 6496 6728 7308 7569 8258 8352 9744 10092 10962 11774 12387 12528 13456 14616 15138 16516 17661 19488 20184 21924 22707 23548 24774 25056 26912 28903 29232 30276 33032 35322 37161 40368 43848 45414 47096 49548 52983 57806 58464 60552 66064 70644 74322 80736 86709 87696 90828 94192 99096 105966 111483 115612 119741 121104 132128 141288 148644 158949 173418 175392 181656 188384 198192 211932 222966 231224 239482 242208 260127 282576 297288 317898 346836 359223 363312 396384 423864 445932 462448 478964 520254 565152 594576 635796 693672 718446 726624 780381 838187 847728 891864 924896 957928 1040508 1077669 1189152 1271592 1387344 1436892 1560762 1676374 1695456 1783728 1915856 2081016 2155338 2514561 2543184 2774688 2873784 3121524 3233007 3352748 3472489 3567456 3831712 4162032 4310676 5029122 5086368 5747568 6243048 6466014 6705496 6944978 7543683 8324064 8621352 10058244 10417467 11495136 12486096 12932028 13410992 13889956 15087366 17242704 20116488 20834934 22631049 24307423 24972192 25864056 26821984 27779912 30174732 31252401 34485408 40232976 41669868 45262098 48614846 51728112 55559824 60349464 62504802 72922269 80465952 83339736 90524196 93757203 97229692 103456224 111119648 120698928 125009604 145844538 166679472 181048392 187514406 194459384 218766807 241397856 250019208 291689076 333358944 362096784 375028812 388918768 437533614 500038416 583378152 656300421 724193568 750057624 777837536 875067228 1000076832 1166756304 1312600842 1500115248 1750134456 2333512608 2625201684 3000230496 3500268912 5250403368 7000537824 10500806736 21001613472
• Sum of all divisors σ(n): 72520156800
• Sum of proper divisors (its aliquot sum) s(n): 51518543328
• 21001613472 is an abundant number, because the sum of its proper divisors (51518543328) is greater than itself. Its abundance is 30516929856

Bases of 21001613472

• Binary: 10011100011110010110011000010100000₂
• Hexadecimal: 0x4E3CB30A0
• Base-36: 9NBTGO0

Squares and roots of 21001613472

• 21001613472 squared (21001613472²) is 441067768427291894784
• 21001613472 cubed (21001613472³) is 9263134787467589709972060930048
• The square root of 21001613472 is 144919.3343622583
• The cube root of 21001613472 is 2758.9948324591

Scales and comparisons

• 21,001,613,472 seconds is equal to 667 years, 40 weeks, 6 days, 5 hours, 31 minutes, 12 seconds.
• To count from 1 to 21,001,613,472 would take you about one thousand, three hundred thirty-five 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 21001613472 cubic inches would be around 229.9 feet tall.

Recreational maths with 21001613472

• 21001613472 backwards is 27431610012
• 21001613472 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21001613472's digits is 27
• More coming soon!