21398434560
21,398,434,560 is an even composite number composed of five prime numbers multiplied together.
21398434560 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of two hundred sixteen divisors.
Prime factorization of 21398434560:
28 × 32 × 5 × 23 × 80761
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 5 × 23 × 80761)See below for interesting mathematical facts about the number 21398434560 from the Numbermatics database.
Names of 21398434560
- Cardinal: 21398434560 can be written as Twenty-one billion, three hundred ninety-eight million, four hundred thirty-four thousand, five hundred sixty.
Scientific notation
- Scientific notation: 2.139843456 × 1010
Factors of 21398434560
Divisors of 21398434560
- Number of divisors d(n): 216
-
Complete list of divisors:
1 2 3 4 5 6 8 9 10 12 15 16 18 20 23 24 30 32 36 40 45 46 48 60 64 69 72 80 90 92 96 115 120 128 138 144 160 180 184 192 207 230 240 256 276 288 320 345 360 368 384 414 460 480 552 576 640 690 720 736 768 828 920 960 1035 1104 1152 1280 1380 1440 1472 1656 1840 1920 2070 2208 2304 2760 2880 2944 3312 3680 3840 4140 4416 5520 5760 5888 6624 7360 8280 8832 11040 11520 13248 14720 16560 17664 22080 26496 29440 33120 44160 52992 66240 80761 88320 132480 161522 242283 264960 323044 403805 484566 646088 726849 807610 969132 1211415 1292176 1453698 1615220 1857503 1938264 2422830 2584352 2907396 3230440 3634245 3715006 3876528 4845660 5168704 5572509 5814792 6460880 7268490 7430012 7753056 9287515 9691320 10337408 11145018 11629584 12921760 14536980 14860024 15506112 16717527 18575030 19382640 20674816 22290036 23259168 25843520 27862545 29073960 29720048 31012224 33435054 37150060 38765280 44580072 46518336 51687040 55725090 58147920 59440096 62024448 66870108 74300120 77530560 83587635 89160144 93036672 103374080 111450180 116295840 118880192 133740216 148600240 155061120 167175270 178320288 186073344 222900360 232591680 237760384 267480432 297200480 310122240 334350540 356640576 445800720 465183360 475520768 534960864 594400960 668701080 713281152 891601440 930366720 1069921728 1188801920 1337402160 1426562304 1783202880 2139843456 2377603840 2674804320 3566405760 4279686912 5349608640 7132811520 10699217280 21398434560
- Sum of all divisors σ(n): 77256283104
- Sum of proper divisors (its aliquot sum) s(n): 55857848544
- 21398434560 is an abundant number, because the sum of its proper divisors (55857848544) is greater than itself. Its abundance is 34459413984
Bases of 21398434560
- Binary: 100111110110111001000110011000000002
- Hexadecimal: 0x4FB723300
- Base-36: 9TW2PS0
Squares and roots of 21398434560
- 21398434560 squared (213984345602) is 457893001618602393600
- 21398434560 cubed (213984345603) is 9798193430617637398108962816000
-
The
square root of 21398434560 is 146282.0377216561 -
The
cube root of 21398434560 is 2776.2633993909
Scales and comparisons
How big is 21398434560?- 21,398,434,560 seconds is equal to 680 years, 21 weeks, 1 hour, 36 minutes.
-
To count from 1 to 21,398,434,560 would take you about one thousand, three hundred sixty 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 21398434560 cubic inches would be around 231.4 feet tall.
Recreational maths with 21398434560
- 21398434560 backwards is 06543489312
- 21398434560 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 21398434560's digits is 45
- More coming soon!
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