128900772

Names of 128900772

• Cardinal: 128900772 can be written as One hundred twenty-eight million, nine hundred thousand, seven hundred seventy-two.

Scientific notation

• Scientific notation: 1.28900772 × 10⁸

Factors of 128900772

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 109

Divisors of 128900772

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 6 7 9 11 12 13 14 18 21 22 26 28 33 36 39 42 44 49 52 63 66 73 77 78 84 91 98 99 117 126 132 143 146 147 154 156 182 196 198 219 231 234 252 273 286 292 294 308 343 364 396 429 438 441 462 468 511 539 546 572 588 637 657 686 693 803 819 858 876 882 924 949 1001 1022 1029 1078 1092 1274 1287 1314 1372 1386 1533 1606 1617 1638 1716 1764 1898 1911 2002 2044 2058 2156 2409 2548 2574 2628 2772 2847 3003 3066 3087 3212 3234 3276 3577 3773 3796 3822 4004 4116 4459 4599 4818 4851 5148 5621 5694 5733 6006 6132 6174 6468 6643 7007 7154 7227 7546 7644 8541 8918 9009 9198 9636 9702 10439 10731 11242 11319 11388 11466 12012 12348 13286 13377 14014 14308 14454 15092 16863 17082 17836 18018 18396 19404 19929 20878 21021 21462 22484 22638 22932 25039 26572 26754 28028 28908 31317 32193 33726 33957 34164 36036 39347 39858 40131 41756 42042 42924 45276 46501 49049 50078 50589 53508 59787 62634 63063 64386 67452 67914 73073 75117 78694 79716 80262 84084 93002 93951 98098 100156 101178 118041 119574 125268 126126 128772 135828 139503 146146 147147 150234 157388 160524 186004 187902 196196 202356 219219 225351 236082 239148 252252 275429 279006 292292 294294 300468 325507 354123 375804 418509 438438 441441 450702 472164 511511 550858 558012 588588 651014 657657 708246 826287 837018 876876 882882 901404 976521 1023022 1101716 1302028 1315314 1416492 1534533 1652574 1674036 1765764 1953042 2046044 2478861 2630628 2929563 3069066 3305148 3580577 3906084 4603599 4957722 5859126 6138132 7161154 9207198 9915444 10741731 11718252 14322308 18414396 21483462 32225193 42966924 64450386 128900772
• Sum of all divisors σ(n): 452524800
• Sum of proper divisors (its aliquot sum) s(n): 323624028
• 128900772 is an abundant number, because the sum of its proper divisors (323624028) is greater than itself. Its abundance is 194723256

Bases of 128900772

• Binary: 111101011101101111010100100₂
• Hexadecimal: 0x7AEDEA4
• Base-36: 24QSH0

Squares and roots of 128900772

• 128900772 squared (128900772²) is 16615409022195984
• 128900772 cubed (128900772³) is 2141739050056827472899648
• The square root of 128900772 is 11353.4475821223
• The cube root of 128900772 is 505.1478467875

Scales and comparisons

• 128,900,772 seconds is equal to 4 years, 5 weeks, 21 hours, 46 minutes, 12 seconds.
• To count from 1 to 128,900,772 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 128900772 cubic inches would be around 42.1 feet tall.

Recreational maths with 128900772

• 128900772 backwards is 277009821
• 128900772 is a Harshad number.
• The number of decimal digits it has is: 9
• The sum of 128900772's digits is 36
• More coming soon!