121990400
121,990,400 is an even composite number composed of four prime numbers multiplied together.
121990400 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of one hundred sixty-two divisors.
Prime factorization of 121990400:
28 × 52 × 72 × 389
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 5 × 7 × 7 × 389)See below for interesting mathematical facts about the number 121990400 from the Numbermatics database.
Names of 121990400
- Cardinal: 121990400 can be written as One hundred twenty-one million, nine hundred ninety thousand, four hundred.
Scientific notation
- Scientific notation: 1.219904 × 108
Factors of 121990400
Divisors of 121990400
- Number of divisors d(n): 162
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Complete list of divisors:
1 2 4 5 7 8 10 14 16 20 25 28 32 35 40 49 50 56 64 70 80 98 100 112 128 140 160 175 196 200 224 245 256 280 320 350 389 392 400 448 490 560 640 700 778 784 800 896 980 1120 1225 1280 1400 1556 1568 1600 1792 1945 1960 2240 2450 2723 2800 3112 3136 3200 3890 3920 4480 4900 5446 5600 6224 6272 6400 7780 7840 8960 9725 9800 10892 11200 12448 12544 13615 15560 15680 19061 19450 19600 21784 22400 24896 27230 31120 31360 38122 38900 39200 43568 44800 49792 54460 62240 62720 68075 76244 77800 78400 87136 95305 99584 108920 124480 136150 152488 155600 156800 174272 190610 217840 248960 272300 304976 311200 313600 348544 381220 435680 476525 497920 544600 609952 622400 697088 762440 871360 953050 1089200 1219904 1244800 1524880 1742720 1906100 2178400 2439808 2489600 3049760 3485440 3812200 4356800 4879616 6099520 7624400 8713600 12199040 15248800 17427200 24398080 30497600 60995200 121990400
- Sum of all divisors σ(n): 352145430
- Sum of proper divisors (its aliquot sum) s(n): 230155030
- 121990400 is an abundant number, because the sum of its proper divisors (230155030) is greater than itself. Its abundance is 108164630
Bases of 121990400
- Binary: 1110100010101101101000000002
- Hexadecimal: 0x7456D00
- Base-36: 20MOE8
Squares and roots of 121990400
- 121990400 squared (1219904002) is 14881657692160000
- 121990400 cubed (1219904003) is 1815419374529675264000000
-
The
square root of 121990400 is 11044.9264370569 -
The
cube root of 121990400 is 495.9545570577
Scales and comparisons
How big is 121990400?- 121,990,400 seconds is equal to 3 years, 45 weeks, 4 days, 22 hours, 13 minutes, 20 seconds.
-
To count from 1 to 121,990,400 would take you about five 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 121990400 cubic inches would be around 41.3 feet tall.
Recreational maths with 121990400
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