72991140
72,991,140 is an even composite number composed of five prime numbers multiplied together.
72991140 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 72991140:
22 × 3 × 5 × 672 × 271
(2 × 2 × 3 × 5 × 67 × 67 × 271)See below for interesting mathematical facts about the number 72991140 from the Numbermatics database.
Names of 72991140
- Cardinal: 72991140 can be written as Seventy-two million, nine hundred ninety-one thousand, one hundred forty.
Scientific notation
- Scientific notation: 7.299114 × 107
Factors of 72991140
Divisors of 72991140
- Number of divisors d(n): 72
-
Complete list of divisors:
1 2 3 4 5 6 10 12 15 20 30 60 67 134 201 268 271 335 402 542 670 804 813 1005 1084 1340 1355 1626 2010 2710 3252 4020 4065 4489 5420 8130 8978 13467 16260 17956 18157 22445 26934 36314 44890 53868 54471 67335 72628 89780 90785 108942 134670 181570 217884 269340 272355 363140 544710 1089420 1216519 2433038 3649557 4866076 6082595 7299114 12165190 14598228 18247785 24330380 36495570 72991140
- Sum of all divisors σ(n): 208236672
- Sum of proper divisors (its aliquot sum) s(n): 135245532
- 72991140 is an abundant number, because the sum of its proper divisors (135245532) is greater than itself. Its abundance is 62254392
Bases of 72991140
- Binary: 1000101100111000001101001002
- Hexadecimal: 0x459C1A4
- Base-36: 17GGBO
Squares and roots of 72991140
- 72991140 squared (729911402) is 5327706518499600
- 72991140 cubed (729911403) is 388875372370716893544000
-
The
square root of 72991140 is 8543.4852373021 -
The
cube root of 72991140 is 417.9170107599
Scales and comparisons
How big is 72991140?- 72,991,140 seconds is equal to 2 years, 16 weeks, 4 days, 19 hours, 19 minutes.
-
To count from 1 to 72,991,140 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 72991140 cubic inches would be around 34.8 feet tall.
Recreational maths with 72991140
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