128445472

Names of 128445472

• Cardinal: 128445472 can be written as One hundred twenty-eight million, four hundred forty-five thousand, four hundred seventy-two.

Scientific notation

• Scientific notation: 1.28445472 × 10⁸

Factors of 128445472

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 81

Divisors of 128445472

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 4 8 16 17 19 32 34 38 43 68 76 86 136 152 172 272 289 304 323 344 544 578 608 646 688 731 817 1156 1292 1376 1462 1634 2312 2584 2924 3268 4624 4913 5168 5491 5848 6536 9248 9826 10336 10982 11696 12427 13072 13889 19652 21964 23392 24854 26144 27778 39304 43928 49708 55556 78608 87856 93347 99416 111112 157216 175712 186694 198832 211259 222224 236113 373388 397664 422518 444448 472226 746776 845036 944452 1493552 1690072 1888904 2987104 3380144 3777808 4013921 6760288 7555616 8027842 16055684 32111368 64222736 128445472
• Sum of all divisors σ(n): 289396800
• Sum of proper divisors (its aliquot sum) s(n): 160951328
• 128445472 is an abundant number, because the sum of its proper divisors (160951328) is greater than itself. Its abundance is 32505856

Bases of 128445472

• Binary: 111101001111110110000100000₂
• Hexadecimal: 0x7A7EC20
• Base-36: 24H15S

Squares and roots of 128445472

• 128445472 squared (128445472²) is 16498239277302784
• 128445472 cubed (128445472³) is 2119124131142094977794048
• The square root of 128445472 is 11333.3786665761
• The cube root of 128445472 is 504.5523883935

Scales and comparisons

• 128,445,472 seconds is equal to 4 years, 4 weeks, 2 days, 15 hours, 17 minutes, 52 seconds.
• To count from 1 to 128,445,472 would take you about six 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 128445472 cubic inches would be around 42 feet tall.

Recreational maths with 128445472

• 128445472 backwards is 274544821
• The number of decimal digits it has is: 9
• The sum of 128445472's digits is 37
• More coming soon!