129861120

Names of 129861120

• Cardinal: 129861120 can be written as One hundred twenty-nine million, eight hundred sixty-one thousand, one hundred twenty.

Scientific notation

• Scientific notation: 1.2986112 × 10⁸

Factors of 129861120

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 504

Divisors of 129861120

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 37 40 48 60 64 74 80 96 111 120 128 148 160 185 192 222 240 256 296 320 370 384 444 457 480 512 555 592 640 740 768 888 914 960 1110 1184 1280 1371 1480 1536 1776 1828 1920 2220 2285 2368 2560 2742 2960 3552 3656 3840 4440 4570 4736 5484 5920 6855 7104 7312 7680 8880 9140 9472 10968 11840 13710 14208 14624 16909 17760 18280 18944 21936 23680 27420 28416 29248 33818 35520 36560 43872 47360 50727 54840 56832 58496 67636 71040 73120 84545 87744 94720 101454 109680 116992 135272 142080 146240 169090 175488 202908 219360 233984 253635 270544 284160 292480 338180 350976 405816 438720 507270 541088 584960 676360 701952 811632 877440 1014540 1082176 1169920 1352720 1623264 1754880 2029080 2164352 2705440 3246528 3509760 4058160 4328704 5410880 6493056 8116320 8657408 10821760 12986112 16232640 21643520 25972224 32465280 43287040 64930560 129861120
• Sum of all divisors σ(n): 427303008
• Sum of proper divisors (its aliquot sum) s(n): 297441888
• 129861120 is an abundant number, because the sum of its proper divisors (297441888) is greater than itself. Its abundance is 167580768

Bases of 129861120

• Binary: 111101111011000011000000000₂
• Hexadecimal: 0x7BD8600
• Base-36: 25BDHC

Squares and roots of 129861120

• 129861120 squared (129861120²) is 16863910487654400
• 129861120 cubed (129861120³) is 2189966303506546556928000
• The square root of 129861120 is 11395.6623326597
• The cube root of 129861120 is 506.3992433023

Scales and comparisons

• 129,861,120 seconds is equal to 4 years, 6 weeks, 5 days, 32 minutes.
• To count from 1 to 129,861,120 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 129861120 cubic inches would be around 42.2 feet tall.

Recreational maths with 129861120

• 129861120 backwards is 021168921
• 129861120 is a Harshad number.
• The number of decimal digits it has is: 9
• The sum of 129861120's digits is 30
• More coming soon!