990639720
990,639,720 is an even composite number composed of six prime numbers multiplied together.
990639720 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of three hundred twenty divisors.
Prime factorization of 990639720:
23 × 34 × 5 × 7 × 31 × 1409
(2 × 2 × 2 × 3 × 3 × 3 × 3 × 5 × 7 × 31 × 1409)See below for interesting mathematical facts about the number 990639720 from the Numbermatics database.
Names of 990639720
- Cardinal: 990639720 can be written as Nine hundred ninety million, six hundred thirty-nine thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 9.9063972 × 108
Factors of 990639720
Divisors of 990639720
- Number of divisors d(n): 320
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Complete list of divisors:
1 2 3 4 5 6 7 8 9 10 12 14 15 18 20 21 24 27 28 30 31 35 36 40 42 45 54 56 60 62 63 70 72 81 84 90 93 105 108 120 124 126 135 140 155 162 168 180 186 189 210 216 217 248 252 270 279 280 310 315 324 360 372 378 405 420 434 465 504 540 558 567 620 630 648 651 744 756 810 837 840 868 930 945 1080 1085 1116 1134 1240 1260 1302 1395 1409 1512 1620 1674 1736 1860 1890 1953 2170 2232 2268 2511 2520 2604 2790 2818 2835 3240 3255 3348 3720 3780 3906 4185 4227 4340 4536 5022 5208 5580 5636 5670 5859 6510 6696 7045 7560 7812 8370 8454 8680 9765 9863 10044 11160 11272 11340 11718 12555 12681 13020 14090 15624 16740 16908 17577 19530 19726 20088 21135 22680 23436 25110 25362 26040 28180 29295 29589 33480 33816 35154 38043 39060 39452 42270 43679 46872 49315 50220 50724 56360 58590 59178 63405 70308 76086 78120 78904 84540 87358 87885 88767 98630 100440 101448 114129 117180 118356 126810 131037 140616 147945 152172 169080 174716 175770 177534 190215 197260 218395 228258 234360 236712 253620 262074 266301 295890 304344 305753 349432 351540 355068 380430 393111 394520 436790 443835 456516 507240 524148 532602 570645 591780 611506 655185 703080 710136 760860 786222 798903 873580 887670 913032 917259 1048296 1065204 1141290 1179333 1183560 1223012 1310370 1331505 1521720 1528765 1572444 1597806 1747160 1775340 1834518 1965555 2130408 2282580 2358666 2446024 2620740 2663010 2751777 3057530 3144888 3195612 3537999 3550680 3669036 3931110 3994515 4565160 4586295 4717332 5241480 5326020 5503554 5896665 6115060 6391224 7075998 7338072 7862220 7989030 8255331 9172590 9434664 10652040 11007108 11793330 12230120 13758885 14151996 15724440 15978060 16510662 17689995 18345180 22014216 23586660 24765993 27517770 28303992 31956120 33021324 35379990 36690360 41276655 47173320 49531986 55035540 66042648 70759980 82553310 99063972 110071080 123829965 141519960 165106620 198127944 247659930 330213240 495319860 990639720
- Sum of all divisors σ(n): 3930854400
- Sum of proper divisors (its aliquot sum) s(n): 2940214680
- 990639720 is an abundant number, because the sum of its proper divisors (2940214680) is greater than itself. Its abundance is 1949574960
Bases of 990639720
- Binary: 1110110000101111110110011010002
- Hexadecimal: 0x3B0BF668
- Base-36: GDSUI0
Squares and roots of 990639720
- 990639720 squared (9906397202) is 981367054841678400
- 990639720 cubed (9906397203) is 972181184425584934506048000
-
The
square root of 990639720 is 31474.4296215197 -
The
cube root of 990639720 is 996.8701207427
Scales and comparisons
How big is 990639720?- 990,639,720 seconds is equal to 31 years, 25 weeks, 6 days, 17 hours, 42 minutes.
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To count from 1 to 990,639,720 would take you about forty-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 990639720 cubic inches would be around 83.1 feet tall.
Recreational maths with 990639720
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