161230720
161,230,720 is an even composite number composed of six prime numbers multiplied together.
161230720 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of two hundred fifty-six divisors.
Prime factorization of 161230720:
27 × 5 × 7 × 17 × 29 × 73
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 7 × 17 × 29 × 73)See below for interesting mathematical facts about the number 161230720 from the Numbermatics database.
Names of 161230720
- Cardinal: 161230720 can be written as One hundred sixty-one million, two hundred thirty thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 1.6123072 × 108
Factors of 161230720
Divisors of 161230720
- Number of divisors d(n): 256
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Complete list of divisors:
1 2 4 5 7 8 10 14 16 17 20 28 29 32 34 35 40 56 58 64 68 70 73 80 85 112 116 119 128 136 140 145 146 160 170 203 224 232 238 272 280 290 292 320 340 365 406 448 464 476 493 511 544 560 580 584 595 640 680 730 812 896 928 952 986 1015 1022 1088 1120 1160 1168 1190 1241 1360 1460 1624 1856 1904 1972 2030 2044 2117 2176 2240 2320 2336 2380 2465 2482 2555 2720 2920 3248 3451 3712 3808 3944 4060 4088 4234 4480 4640 4672 4760 4930 4964 5110 5440 5840 6205 6496 6902 7616 7888 8120 8176 8468 8687 9280 9344 9520 9860 9928 10220 10585 10880 11680 12410 12992 13804 14819 15232 15776 16240 16352 16936 17255 17374 18560 19040 19720 19856 20440 21170 23360 24820 25984 27608 29638 31552 32480 32704 33872 34510 34748 35989 38080 39440 39712 40880 42340 43435 46720 49640 55216 59276 63104 64960 65408 67744 69020 69496 71978 74095 76160 78880 79424 81760 84680 86870 99280 110432 118552 129920 135488 138040 138992 143956 148190 157760 158848 163520 169360 173740 179945 198560 220864 237104 251923 270976 276080 277984 287912 296380 315520 327040 338720 347480 359890 397120 441728 474208 503846 552160 555968 575824 592760 677440 694960 719780 794240 948416 1007692 1104320 1111936 1151648 1185520 1259615 1354880 1389920 1439560 1896832 2015384 2208640 2303296 2371040 2519230 2779840 2879120 4030768 4606592 4742080 5038460 5559680 5758240 8061536 9484160 10076920 11516480 16123072 20153840 23032960 32246144 40307680 80615360 161230720
- Sum of all divisors σ(n): 489110400
- Sum of proper divisors (its aliquot sum) s(n): 327879680
- 161230720 is an abundant number, because the sum of its proper divisors (327879680) is greater than itself. Its abundance is 166648960
Bases of 161230720
- Binary: 10011001110000101111100000002
- Hexadecimal: 0x99C2F80
- Base-36: 2NZQF4
Squares and roots of 161230720
- 161230720 squared (1612307202) is 25995345071718400
- 161230720 cubed (1612307203) is 4191248202561609269248000
-
The
square root of 161230720 is 12697.6659272483 -
The
cube root of 161230720 is 544.2719228779
Scales and comparisons
How big is 161230720?- 161,230,720 seconds is equal to 5 years, 6 weeks, 4 days, 2 hours, 18 minutes, 40 seconds.
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To count from 1 to 161,230,720 would take you about seven 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 161230720 cubic inches would be around 45.4 feet tall.
Recreational maths with 161230720
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