640428147612

Names of 640428147612

• Cardinal: 640428147612 can be written as Six hundred forty billion, four hundred twenty-eight million, one hundred forty-seven thousand, six hundred twelve.

Scientific notation

• Scientific notation: 6.40428147612 × 10¹¹

Factors of 640428147612

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 914319

Divisors of 640428147612

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 6 9 11 12 18 22 29 33 36 44 58 61 66 87 99 116 122 132 174 183 198 244 261 319 348 366 396 522 549 638 671 732 957 1044 1098 1276 1342 1769 1914 2013 2196 2684 2871 3538 3828 4026 5307 5742 6039 7076 8052 10614 11484 12078 15921 19459 21228 24156 31842 38918 58377 63684 77836 116754 175131 233508 350262 700524 914213 1828426 2742639 3656852 5485278 8227917 10056343 10970556 16455834 20112686 26512177 30169029 32911668 40225372 53024354 55766993 60338058 79536531 90507087 106048708 111533986 120676116 159073062 167300979 181014174 223067972 238609593 291633947 318146124 334601958 362028348 477219186 501902937 583267894 613436923 669203916 874901841 954438372 1003805874 1166535788 1226873846 1617242797 1749803682 1840310769 2007611748 2453747692 2624705523 3234485594 3499607364 3680621538 4851728391 5249411046 5520932307 6468971188 7361243076 9703456782 10498822092 11041864614 14555185173 17789670767 19406913564 22083729228 29110370346 35579341534 53369012301 58220740692 71158683068 106738024602 160107036903 213476049204 320214073806 640428147612
• Sum of all divisors σ(n): 1856878339680
• Sum of proper divisors (its aliquot sum) s(n): 1216450192068
• 640428147612 is an abundant number, because the sum of its proper divisors (1216450192068) is greater than itself. Its abundance is 576022044456

Bases of 640428147612

• Binary: 1001010100011100011111100000001110011100₂
• Hexadecimal: 0x951C7E039C
• Base-36: 867IDTB0

Squares and roots of 640428147612

• 640428147612 squared (640428147612²) is 410148212253737661302544
• 640428147612 cubed (640428147612³) is 262670459820034610151389309023124928
• The square root of 640428147612 is 800267.5475189531
• The cube root of 640428147612 is 8619.6600319011

Scales and comparisons

• 640,428,147,612 seconds is equal to 20,363 years, 32 weeks, 6 days, 19 hours, 40 minutes, 12 seconds.
• To count from 1 to 640,428,147,612 would take you about forty thousand, seven hundred twenty-seven 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 640428147612 cubic inches would be around 718.3 feet tall.

Recreational maths with 640428147612

• 640428147612 backwards is 216741824046
• The number of decimal digits it has is: 12
• The sum of 640428147612's digits is 45
• More coming soon!