20421264640

Names of 20421264640

• Cardinal: 20421264640 can be written as Twenty billion, four hundred twenty-one million, two hundred sixty-four thousand, six hundred forty.

Scientific notation

• Scientific notation: 2.042126464 × 10¹⁰

Factors of 20421264640

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 43070

Divisors of 20421264640

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 28 32 35 40 53 56 64 70 80 106 112 128 140 160 212 224 256 265 280 320 371 424 448 530 560 640 742 848 896 1060 1120 1280 1484 1696 1792 1855 2120 2240 2968 3392 3710 4240 4480 5936 6784 7420 8480 8960 11872 13568 14840 16960 23744 29680 33920 43003 47488 59360 67840 86006 94976 118720 172012 215015 237440 301021 344024 430030 474880 602042 688048 860060 1204084 1376096 1505105 1720120 2279159 2408168 2752192 3010210 3440240 4558318 4816336 5504384 6020420 6880480 9116636 9632672 11008768 11395795 12040840 13760960 15954113 18233272 19265344 22791590 24081680 27521920 31908226 36466544 38530688 45583180 48163360 55043840 63816452 72933088 77061376 79770565 91166360 96326720 127632904 145866176 159541130 182332720 192653440 255265808 291732352 319082260 364665440 385306880 510531616 583464704 638164520 729330880 1021063232 1276329040 1458661760 2042126464 2552658080 2917323520 4084252928 5105316160 10210632320 20421264640
• Sum of all divisors σ(n): 56959314048
• Sum of proper divisors (its aliquot sum) s(n): 36538049408
• 20421264640 is an abundant number, because the sum of its proper divisors (36538049408) is greater than itself. Its abundance is 16116784768

Bases of 20421264640

• Binary: 10011000001001100111100010100000000₂
• Hexadecimal: 0x4C133C500
• Base-36: 9DQAKN4

Squares and roots of 20421264640

• 20421264640 squared (20421264640²) is 417028049496914329600
• 20421264640 cubed (20421264640³) is 8516240161079506388169785344000
• The square root of 20421264640 is 142902.9903116097
• The cube root of 20421264640 is 2733.3434880977

Scales and comparisons

• 20,421,264,640 seconds is equal to 649 years, 17 weeks, 2 days, 5 hours, 30 minutes, 40 seconds.
• To count from 1 to 20,421,264,640 would take you about one thousand, two hundred ninety-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 20421264640 cubic inches would be around 227.8 feet tall.

Recreational maths with 20421264640

• 20421264640 backwards is 04646212402
• The number of decimal digits it has is: 11
• The sum of 20421264640's digits is 31
• More coming soon!