21124486872

Names of 21124486872

• Cardinal: 21124486872 can be written as Twenty-one billion, one hundred twenty-four million, four hundred eighty-six thousand, eight hundred seventy-two.

Scientific notation

• Scientific notation: 2.1124486872 × 10¹⁰

Factors of 21124486872

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1024

Divisors of 21124486872

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 6 8 9 12 18 24 36 53 72 79 106 158 159 212 237 316 318 424 474 477 632 636 711 887 948 954 1272 1422 1774 1896 1908 2661 2844 3548 3816 4187 5322 5688 6241 7096 7983 8374 10644 12482 12561 15966 16748 18723 21288 24964 25122 31932 33496 37446 37683 47011 49928 50244 56169 63864 70073 74892 75366 94022 100488 112338 140146 141033 149784 150732 188044 210219 224676 280292 282066 301464 330773 376088 420438 423099 449352 560584 564132 630657 661546 840876 846198 992319 1128264 1261314 1323092 1681752 1692396 1984638 2522628 2646184 2976957 3384792 3713869 3969276 5045256 5535767 5953914 7427738 7938552 11071534 11141607 11907828 14855476 16607301 22143068 22283214 23815656 29710952 33214602 33424821 44286136 44566428 49821903 66429204 66849642 89132856 99643806 132858408 133699284 199287612 267398568 293395651 398575224 586791302 880186953 1173582604 1760373906 2347165208 2640560859 3520747812 5281121718 7041495624 10562243436 21124486872
• Sum of all divisors σ(n): 59105395440
• Sum of proper divisors (its aliquot sum) s(n): 37980908568
• 21124486872 is an abundant number, because the sum of its proper divisors (37980908568) is greater than itself. Its abundance is 16856421696

Bases of 21124486872

• Binary: 10011101011000111100001011011011000₂
• Hexadecimal: 0x4EB1E16D8
• Base-36: 9PCZ2E0

Squares and roots of 21124486872

• 21124486872 squared (21124486872²) is 446243945605300344384
• 21124486872 cubed (21124486872³) is 9426674370648649218556886926848
• The square root of 21124486872 is 145342.6533127837
• The cube root of 21124486872 is 2764.3650242585

Scales and comparisons

• 21,124,486,872 seconds is equal to 671 years, 36 weeks, 9 hours, 1 minute, 12 seconds.
• To count from 1 to 21,124,486,872 would take you about one thousand, three hundred forty-three 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 21124486872 cubic inches would be around 230.4 feet tall.

Recreational maths with 21124486872

• 21124486872 backwards is 27868442112
• The number of decimal digits it has is: 11
• The sum of 21124486872's digits is 45
• More coming soon!