21209724432

Names of 21209724432

• Cardinal: 21209724432 can be written as Twenty-one billion, two hundred nine million, seven hundred twenty-four thousand, four hundred thirty-two.

Scientific notation

• Scientific notation: 2.1209724432 × 10¹⁰

Factors of 21209724432

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 821

Divisors of 21209724432

• Number of divisors d(n): 360
• Complete list of divisors:
  1 2 3 4 6 8 9 12 13 16 18 24 26 29 36 39 41 48 52 58 72 78 82 87 104 116 117 123 144 156 164 169 174 208 232 234 246 261 312 328 338 348 369 377 464 468 492 507 522 533 624 656 676 696 733 738 754 936 984 1014 1044 1066 1131 1189 1352 1392 1466 1476 1508 1521 1599 1872 1968 2028 2088 2132 2199 2262 2378 2704 2932 2952 3016 3042 3198 3393 3567 4056 4176 4264 4398 4524 4756 4797 4901 5864 5904 6032 6084 6396 6597 6786 6929 7134 8112 8528 8796 9048 9512 9529 9594 9802 10701 11728 12168 12792 13194 13572 13858 14268 14703 15457 17592 18096 19024 19058 19188 19604 20787 21257 21402 24336 25584 26388 27144 27716 28536 28587 29406 30053 30914 35184 38116 38376 39208 41574 42514 42804 44109 46371 52776 54288 55432 57072 57174 58812 60106 61828 62361 63771 76232 76752 78416 83148 85028 85608 85761 88218 90159 92742 105552 110864 114348 117624 120212 123656 123877 124722 127542 139113 152464 166296 170056 171216 171522 176436 180318 185484 191313 200941 228696 235248 240424 247312 247754 249444 255084 270477 276341 278226 332592 340112 343044 352872 360636 370968 371631 382626 390689 401882 457392 480848 495508 498888 510168 540954 552682 556452 602823 686088 705744 721272 741936 743262 765252 781378 803764 829023 871537 991016 997776 1020336 1081908 1105364 1112904 1114893 1172067 1205646 1372176 1442544 1486524 1530504 1562756 1607528 1658046 1743074 1808469 1982032 2163816 2210728 2225808 2229786 2344134 2411292 2487069 2614611 2973048 3061008 3125512 3215056 3316092 3486148 3516201 3592433 3616938 4327632 4421456 4459572 4688268 4822584 4974138 5078957 5229222 5946096 6251024 6632184 6972296 7032402 7184866 7233876 7843833 8919144 9376536 9645168 9948276 10157914 10458444 10777299 11329981 13264368 13944592 14064804 14369732 14467752 15236871 15687666 17838288 18753072 19896552 20315828 20916888 21554598 22659962 28129608 28739464 28935504 30473742 31375332 32331897 33989943 39793104 40631656 41833776 43109196 45319924 45710613 56259216 57478928 60947484 62750664 64663794 67979886 81263312 86218392 90639848 91421226 101969829 121894968 125501328 129327588 135959772 147289753 172436784 181279696 182842452 203939658 243789936 258655176 271919544 294579506 365684904 407879316 441869259 517310352 543839088 589159012 731369808 815758632 883738518 1178318024 1325607777 1631517264 1767477036 2356636048 2651215554 3534954072 5302431108 7069908144 10604862216 21209724432
• Sum of all divisors σ(n): 68206025160
• Sum of proper divisors (its aliquot sum) s(n): 46996300728
• 21209724432 is an abundant number, because the sum of its proper divisors (46996300728) is greater than itself. Its abundance is 25786576296

Bases of 21209724432

• Binary: 10011110000001100101011011000010000₂
• Hexadecimal: 0x4F032B610
• Base-36: 9QRQ040

Squares and roots of 21209724432

• 21209724432 squared (21209724432²) is 449852410481377722624
• 21209724432 cubed (21209724432³) is 9541245661380969964558771949568
• The square root of 21209724432 is 145635.5877936433
• The cube root of 21209724432 is 2768.0781167047

Scales and comparisons

• 21,209,724,432 seconds is equal to 674 years, 20 weeks, 6 days, 22 hours, 7 minutes, 12 seconds.
• To count from 1 to 21,209,724,432 would take you about one thousand, three hundred forty-eight 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 21209724432 cubic inches would be around 230.7 feet tall.

Recreational maths with 21209724432

• 21209724432 backwards is 23442790212
• 21209724432 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21209724432's digits is 36
• More coming soon!