21309294888

Names of 21309294888

• Cardinal: 21309294888 can be written as Twenty-one billion, three hundred nine million, two hundred ninety-four thousand, eight hundred eighty-eight.

Scientific notation

• Scientific notation: 2.1309294888 × 10¹⁰

Factors of 21309294888

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 1931

Divisors of 21309294888

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 18 21 24 27 28 29 36 42 54 56 58 63 72 84 87 108 116 126 168 174 189 203 216 232 252 261 307 348 378 406 504 522 609 614 696 756 783 812 921 1044 1218 1228 1512 1566 1583 1624 1827 1842 2088 2149 2436 2456 2763 3132 3166 3654 3684 4298 4749 4872 5481 5526 6264 6332 6447 7308 7368 8289 8596 8903 9498 10962 11052 11081 12664 12894 14247 14616 16578 17192 17806 18996 19341 21924 22104 22162 25788 26709 28494 33156 33243 35612 37992 38682 42741 43848 44324 45907 51576 53418 56988 58023 62321 66312 66486 71224 77364 80127 85482 88648 91814 99729 106836 113976 116046 124642 132972 137721 154728 160254 170964 183628 186963 199458 213672 232092 240381 249284 265944 275442 299187 320508 321349 341928 367256 373926 398916 413163 464184 480762 485981 498568 550884 560889 598374 641016 642698 747852 797832 826326 961524 964047 971962 1101768 1121778 1196748 1239489 1285396 1457943 1495704 1652652 1682667 1923048 1928094 1943924 2243556 2393496 2478978 2570792 2892141 2915886 3305304 3365334 3401867 3856188 3887848 4373829 4487112 4957956 5784282 5831772 6730668 6803734 7712376 8676423 8747658 9915912 10205601 11568564 11663544 13121487 13461336 13607468 14093449 17352846 17495316 20411202 23137128 26242974 27214936 28186898 30616803 34705692 34990632 40822404 42280347 52485948 56373796 61233606 69411384 81644808 84560694 91850409 98654143 104971896 112747592 122467212 126841041 169121388 183700818 197308286 244934424 253682082 295962429 338242776 367401636 380523123 394616572 507364164 591924858 734803272 761046246 789233144 887887287 1014728328 1183849716 1522092492 1775774574 2367699432 2663661861 3044184984 3551549148 5327323722 7103098296 10654647444 21309294888
• Sum of all divisors σ(n): 70253568000
• Sum of proper divisors (its aliquot sum) s(n): 48944273112
• 21309294888 is an abundant number, because the sum of its proper divisors (48944273112) is greater than itself. Its abundance is 27634978224

Bases of 21309294888

• Binary: 10011110110001000100000100100101000₂
• Hexadecimal: 0x4F6220928
• Base-36: 9SF0560

Squares and roots of 21309294888

• 21309294888 squared (21309294888²) is 454086048623742932544
• 21309294888 cubed (21309294888³) is 9676253514650044707885988035072
• The square root of 21309294888 is 145977.0354816127
• The cube root of 21309294888 is 2772.4029979479

Scales and comparisons

• 21,309,294,888 seconds is equal to 677 years, 29 weeks, 4 days, 8 hours, 34 minutes, 48 seconds.
• To count from 1 to 21,309,294,888 would take you about one thousand, three hundred fifty-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 21309294888 cubic inches would be around 231 feet tall.

Recreational maths with 21309294888

• 21309294888 backwards is 88849290312
• 21309294888 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21309294888's digits is 54
• More coming soon!