128769472

Names of 128769472

• Cardinal: 128769472 can be written as One hundred twenty-eight million, seven hundred sixty-nine thousand, four hundred seventy-two.

Scientific notation

• Scientific notation: 1.28769472 × 10⁸

Factors of 128769472

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 188

Divisors of 128769472

• Number of divisors d(n): 112
• Complete list of divisors:
  1 2 4 8 13 16 26 32 37 47 52 64 74 89 94 104 148 178 188 208 296 356 376 416 481 592 611 712 752 832 962 1157 1184 1222 1424 1504 1739 1924 2314 2368 2444 2848 3008 3293 3478 3848 4183 4628 4888 5696 6586 6956 7696 8366 9256 9776 13172 13912 15392 16732 18512 19552 22607 26344 27824 30784 33464 37024 39104 42809 45214 52688 54379 55648 66928 74048 85618 90428 105376 108758 111296 133856 154771 171236 180856 210752 217516 267712 309542 342472 361712 435032 619084 684944 723424 870064 1238168 1369888 1446848 1740128 2012023 2476336 2739776 3480256 4024046 4952672 8048092 9905344 16096184 32192368 64384736 128769472
• Sum of all divisors σ(n): 291876480
• Sum of proper divisors (its aliquot sum) s(n): 163107008
• 128769472 is an abundant number, because the sum of its proper divisors (163107008) is greater than itself. Its abundance is 34337536

Bases of 128769472

• Binary: 111101011001101110111000000₂
• Hexadecimal: 0x7ACDDC0
• Base-36: 24NZ5S

Squares and roots of 128769472

• 128769472 squared (128769472²) is 16581576919158784
• 128769472 cubed (128769472³) is 2135200904807463299842048
• The square root of 128769472 is 11347.6637243091
• The cube root of 128769472 is 504.9762717995

Scales and comparisons

• 128,769,472 seconds is equal to 4 years, 4 weeks, 6 days, 9 hours, 17 minutes, 52 seconds.
• To count from 1 to 128,769,472 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 128769472 cubic inches would be around 42.1 feet tall.

Recreational maths with 128769472

• 128769472 backwards is 274967821
• The number of decimal digits it has is: 9
• The sum of 128769472's digits is 46
• More coming soon!