61990020
61,990,020 is an even composite number composed of five prime numbers multiplied together.
61990020 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 61990020:
22 × 32 × 5 × 241 × 1429
(2 × 2 × 3 × 3 × 5 × 241 × 1429)See below for interesting mathematical facts about the number 61990020 from the Numbermatics database.
Names of 61990020
- Cardinal: 61990020 can be written as Sixty-one million, nine hundred ninety thousand and twenty.
Scientific notation
- Scientific notation: 6.199002 × 107
Factors of 61990020
Divisors of 61990020
- Number of divisors d(n): 72
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Complete list of divisors:
1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 60 90 180 241 482 723 964 1205 1429 1446 2169 2410 2858 2892 3615 4287 4338 4820 5716 7145 7230 8574 8676 10845 12861 14290 14460 17148 21435 21690 25722 28580 42870 43380 51444 64305 85740 128610 257220 344389 688778 1033167 1377556 1721945 2066334 3099501 3443890 4132668 5165835 6199002 6887780 10331670 12398004 15497505 20663340 30995010 61990020
- Sum of all divisors σ(n): 188948760
- Sum of proper divisors (its aliquot sum) s(n): 126958740
- 61990020 is an abundant number, because the sum of its proper divisors (126958740) is greater than itself. Its abundance is 64968720
Bases of 61990020
- Binary: 111011000111100100100001002
- Hexadecimal: 0x3B1E484
- Base-36: 10WNT0
Squares and roots of 61990020
- 61990020 squared (619900202) is 3842762579600400
- 61990020 cubed (619900203) is 238212929164680388008000
-
The
square root of 61990020 is 7873.3741178733 -
The
cube root of 61990020 is 395.7679233993
Scales and comparisons
How big is 61990020?- 61,990,020 seconds is equal to 1 year, 50 weeks, 3 days, 11 hours, 27 minutes.
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To count from 1 to 61,990,020 would take you about two 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 61990020 cubic inches would be around 33 feet tall.
Recreational maths with 61990020
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