640530428720

Names of 640530428720

• Cardinal: 640530428720 can be written as Six hundred forty billion, five hundred thirty million, four hundred twenty-eight thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 6.4053042872 × 10¹¹

Factors of 640530428720

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 520648

Divisors of 640530428720

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 4 5 7 8 10 13 14 16 20 26 28 35 40 52 56 65 70 80 91 104 112 130 140 169 182 208 260 280 338 364 455 520 560 676 728 845 910 1040 1183 1352 1456 1690 1820 2197 2366 2704 3380 3640 4394 4732 5915 6760 7280 8788 9464 10985 11830 13520 15379 17576 18928 21970 23660 30758 35152 43940 47320 61516 76895 87880 94640 123032 153790 175760 246064 307580 520621 615160 1041242 1230320 2082484 2603105 3644347 4164968 5206210 6768073 7288694 8329936 10412420 13536146 14577388 18221735 20824840 27072292 29154776 33840365 36443470 41649680 47376511 54144584 58309552 67680730 72886940 87984949 94753022 108289168 135361460 145773880 175969898 189506044 236882555 270722920 291547760 351939796 379012088 439924745 473765110 541445840 615894643 703879592 758024176 879849490 947530220 1143804337 1231789286 1407759184 1759698980 1895060440 2287608674 2463578572 3079473215 3519397960 3790120880 4575217348 4927157144 5719021685 6158946430 7038795920 8006630359 9150434696 9854314288 11438043370 12317892860 16013260718 18300869392 22876086740 24635785720 32026521436 40033151795 45752173480 49271571440 64053042872 80066303590 91504346960 128106085744 160132607180 320265214360 640530428720
• Sum of all divisors σ(n): 1843751575680
• Sum of proper divisors (its aliquot sum) s(n): 1203221146960
• 640530428720 is an abundant number, because the sum of its proper divisors (1203221146960) is greater than itself. Its abundance is 562690718240

Bases of 640530428720

• Binary: 1001010100100010100101101011001100110000₂
• Hexadecimal: 0x952296B330
• Base-36: 8697A1WW

Squares and roots of 640530428720

• 640530428720 squared (640530428720²) is 410279230116227000838400
• 640530428720 cubed (640530428720³) is 262796331161258416275860151438848000
• The square root of 640530428720 is 800331.4492883557
• The cube root of 640530428720 is 8620.1188819439

Scales and comparisons

• 640,530,428,720 seconds is equal to 20,366 years, 46 weeks, 15 hours, 5 minutes, 20 seconds.
• To count from 1 to 640,530,428,720 would take you about forty thousand, seven hundred thirty-three 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 640530428720 cubic inches would be around 718.3 feet tall.

Recreational maths with 640530428720

• 640530428720 backwards is 027824035046
• The number of decimal digits it has is: 12
• The sum of 640530428720's digits is 41
• More coming soon!