79128140
79,128,140 is an even composite number composed of five prime numbers multiplied together.
79128140 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of seventy-two divisors.
Prime factorization of 79128140:
22 × 5 × 72 × 13 × 6211
(2 × 2 × 5 × 7 × 7 × 13 × 6211)See below for interesting mathematical facts about the number 79128140 from the Numbermatics database.
Names of 79128140
- Cardinal: 79128140 can be written as Seventy-nine million, one hundred twenty-eight thousand, one hundred forty.
Scientific notation
- Scientific notation: 7.912814 × 107
Factors of 79128140
Divisors of 79128140
- Number of divisors d(n): 72
-
Complete list of divisors:
1 2 4 5 7 10 13 14 20 26 28 35 49 52 65 70 91 98 130 140 182 196 245 260 364 455 490 637 910 980 1274 1820 2548 3185 6211 6370 12422 12740 24844 31055 43477 62110 80743 86954 124220 161486 173908 217385 304339 322972 403715 434770 565201 608678 807430 869540 1130402 1217356 1521695 1614860 2260804 2826005 3043390 3956407 5652010 6086780 7912814 11304020 15825628 19782035 39564070 79128140
- Sum of all divisors σ(n): 208201392
- Sum of proper divisors (its aliquot sum) s(n): 129073252
- 79128140 is an abundant number, because the sum of its proper divisors (129073252) is greater than itself. Its abundance is 49945112
Bases of 79128140
- Binary: 1001011011101100110010011002
- Hexadecimal: 0x4B7664C
- Base-36: 1B3ZNW
Squares and roots of 79128140
- 79128140 squared (791281402) is 6261262539859600
- 79128140 cubed (791281403) is 495442058830766009144000
-
The
square root of 79128140 is 8895.3999347977 -
The
cube root of 79128140 is 429.3159124417
Scales and comparisons
How big is 79128140?- 79,128,140 seconds is equal to 2 years, 26 weeks, 5 days, 20 hours, 2 minutes, 20 seconds.
-
To count from 1 to 79,128,140 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 79128140 cubic inches would be around 35.8 feet tall.
Recreational maths with 79128140
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