81370080
81,370,080 is an even composite number composed of five prime numbers multiplied together.
81370080 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of two hundred sixteen divisors.
Prime factorization of 81370080:
25 × 32 × 5 × 112 × 467
(2 × 2 × 2 × 2 × 2 × 3 × 3 × 5 × 11 × 11 × 467)See below for interesting mathematical facts about the number 81370080 from the Numbermatics database.
Names of 81370080
- Cardinal: 81370080 can be written as Eighty-one million, three hundred seventy thousand and eighty.
Scientific notation
- Scientific notation: 8.137008 × 107
Factors of 81370080
Divisors of 81370080
- Number of divisors d(n): 216
-
Complete list of divisors:
1 2 3 4 5 6 8 9 10 11 12 15 16 18 20 22 24 30 32 33 36 40 44 45 48 55 60 66 72 80 88 90 96 99 110 120 121 132 144 160 165 176 180 198 220 240 242 264 288 330 352 360 363 396 440 467 480 484 495 528 605 660 720 726 792 880 934 968 990 1056 1089 1210 1320 1401 1440 1452 1584 1760 1815 1868 1936 1980 2178 2335 2420 2640 2802 2904 3168 3630 3736 3872 3960 4203 4356 4670 4840 5137 5280 5445 5604 5808 7005 7260 7472 7920 8406 8712 9340 9680 10274 10890 11208 11616 14010 14520 14944 15411 15840 16812 17424 18680 19360 20548 21015 21780 22416 25685 28020 29040 30822 33624 34848 37360 41096 42030 43560 44832 46233 51370 56040 56507 58080 61644 67248 74720 77055 82192 84060 87120 92466 102740 112080 113014 123288 134496 154110 164384 168120 169521 174240 184932 205480 224160 226028 231165 246576 282535 308220 336240 339042 369864 410960 452056 462330 493152 508563 565070 616440 672480 678084 739728 821920 847605 904112 924660 1017126 1130140 1232880 1356168 1479456 1695210 1808224 1849320 2034252 2260280 2465760 2542815 2712336 3390420 3698640 4068504 4520560 5085630 5424672 6780840 7397280 8137008 9041120 10171260 13561680 16274016 20342520 27123360 40685040 81370080
- Sum of all divisors σ(n): 305867016
- Sum of proper divisors (its aliquot sum) s(n): 224496936
- 81370080 is an abundant number, because the sum of its proper divisors (224496936) is greater than itself. Its abundance is 143126856
Bases of 81370080
- Binary: 1001101100110011011111000002
- Hexadecimal: 0x4D99BE0
- Base-36: 1CG1K0
Squares and roots of 81370080
- 81370080 squared (813700802) is 6621089919206400
- 81370080 cubed (813700803) is 538758616413018304512000
-
The
square root of 81370080 is 9020.5365694065 -
The
cube root of 81370080 is 433.3328178827
Scales and comparisons
How big is 81370080?- 81,370,080 seconds is equal to 2 years, 30 weeks, 3 days, 18 hours, 48 minutes.
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To count from 1 to 81,370,080 would take you about three 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 81370080 cubic inches would be around 36.1 feet tall.
Recreational maths with 81370080
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