21389972472
21,389,972,472 is an even composite number composed of five prime numbers multiplied together.
21389972472 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred forty-four divisors.
Prime factorization of 21389972472:
23 × 32 × 112 × 31 × 79201
(2 × 2 × 2 × 3 × 3 × 11 × 11 × 31 × 79201)See below for interesting mathematical facts about the number 21389972472 from the Numbermatics database.
Names of 21389972472
- Cardinal: 21389972472 can be written as Twenty-one billion, three hundred eighty-nine million, nine hundred seventy-two thousand, four hundred seventy-two.
Scientific notation
- Scientific notation: 2.1389972472 × 1010
Factors of 21389972472
Divisors of 21389972472
- Number of divisors d(n): 144
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Complete list of divisors:
1 2 3 4 6 8 9 11 12 18 22 24 31 33 36 44 62 66 72 88 93 99 121 124 132 186 198 242 248 264 279 341 363 372 396 484 558 682 726 744 792 968 1023 1089 1116 1364 1452 2046 2178 2232 2728 2904 3069 3751 4092 4356 6138 7502 8184 8712 11253 12276 15004 22506 24552 30008 33759 45012 67518 79201 90024 135036 158402 237603 270072 316804 475206 633608 712809 871211 950412 1425618 1742422 1900824 2455231 2613633 2851236 3484844 4910462 5227266 5702472 6969688 7365693 7840899 9583321 9820924 10454532 14731386 15681798 19166642 19641848 20909064 22097079 27007541 28749963 29462772 31363596 38333284 44194158 54015082 57499926 58925544 62727192 76666568 81022623 86249889 88388316 108030164 114999852 162045246 172499778 176776632 216060328 229999704 243067869 297082951 324090492 344999556 486135738 594165902 648180984 689999112 891248853 972271476 1188331804 1782497706 1944542952 2376663608 2673746559 3564995412 5347493118 7129990824 10694986236 21389972472
- Sum of all divisors σ(n): 65731323840
- Sum of proper divisors (its aliquot sum) s(n): 44341351368
- 21389972472 is an abundant number, because the sum of its proper divisors (44341351368) is greater than itself. Its abundance is 22951378896
Bases of 21389972472
- Binary: 100111110101111000100010011111110002
- Hexadecimal: 0x4FAF113F8
- Base-36: 9TR1CE0
Squares and roots of 21389972472
- 21389972472 squared (213899724722) is 457530922352917790784
- 21389972472 cubed (213899724723) is 9786573834217681013748815298048
-
The
square root of 21389972472 is 146253.1109822967 -
The
cube root of 21389972472 is 2775.8973900205
Scales and comparisons
How big is 21389972472?- 21,389,972,472 seconds is equal to 680 years, 7 weeks, 3 hours, 1 minute, 12 seconds.
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To count from 1 to 21,389,972,472 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 21389972472 cubic inches would be around 231.3 feet tall.
Recreational maths with 21389972472
- 21389972472 backwards is 27427998312
- The number of decimal digits it has is: 11
- The sum of 21389972472's digits is 54
- More coming soon!
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