128936722720

Names of 128936722720

• Cardinal: 128936722720 can be written as One hundred twenty-eight billion, nine hundred thirty-six million, seven hundred twenty-two thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 1.2893672272 × 10¹¹

Factors of 128936722720

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 3851

Divisors of 128936722720

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 4 5 8 10 13 16 20 26 31 32 40 52 62 65 80 104 124 130 155 160 208 248 260 310 403 416 496 520 620 631 806 992 1040 1240 1262 1612 2015 2080 2480 2524 3155 3169 3224 4030 4960 5048 6310 6338 6448 8060 8203 10096 12620 12676 12896 15845 16120 16406 19561 20192 25240 25352 31690 32240 32812 39122 41015 41197 50480 50704 63380 64480 65624 78244 82030 82394 97805 98239 100960 101408 126760 131248 156488 164060 164788 195610 196478 205985 253520 254293 262496 312976 328120 329576 391220 392956 411970 491195 507040 508586 625952 656240 659152 782440 785912 823940 982390 1017172 1271465 1277107 1312480 1318304 1564880 1571824 1647880 1964780 1999639 2034344 2542930 2554214 3129760 3143648 3295760 3929560 3999278 4068688 5085860 5108428 6385535 6591520 7859120 7998556 8137376 9998195 10171720 10216856 12771070 15718240 15997112 19996390 20343440 20433712 25542140 25995307 31994224 39992780 40686880 40867424 51084280 51990614 61988809 63988448 79985560 102168560 103981228 123977618 129976535 159971120 204337120 207962456 247955236 259953070 309944045 319942240 415924912 495910472 519906140 619888090 805854517 831849824 991820944 1039812280 1239776180 1611709034 1983641888 2079624560 2479552360 3223418068 4029272585 4159249120 4959104720 6446836136 8058545170 9918209440 12893672272 16117090340 25787344544 32234180680 64468361360 128936722720
• Sum of all divisors σ(n): 339270543360
• Sum of proper divisors (its aliquot sum) s(n): 210333820640
• 128936722720 is an abundant number, because the sum of its proper divisors (210333820640) is greater than itself. Its abundance is 81397097920

Bases of 128936722720

• Binary: 1111000000101001110100100000100100000₂
• Hexadecimal: 0x1E053A4120
• Base-36: 1N8DLFZ4

Squares and roots of 128936722720

• 128936722720 squared (128936722720²) is 16624678465774164198400
• 128936722720 cubed (128936722720³) is 2143531557650678419388851867648000
• The square root of 128936722720 is 359077.5998583037
• The cube root of 128936722720 is 5051.9480471857

Scales and comparisons

• 128,936,722,720 seconds is equal to 4,099 years, 41 weeks, 4 hours, 18 minutes, 40 seconds.
• To count from 1 to 128,936,722,720 would take you about eight thousand, one hundred ninety-nine 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 128936722720 cubic inches would be around 421 feet tall.

Recreational maths with 128936722720

• 128936722720 backwards is 027227639821
• The number of decimal digits it has is: 12
• The sum of 128936722720's digits is 49
• More coming soon!