21820145664

Names of 21820145664

• Cardinal: 21820145664 can be written as Twenty-one billion, eight hundred twenty million, one hundred forty-five thousand, six hundred sixty-four.

Scientific notation

• Scientific notation: 2.1820145664 × 10¹⁰

Factors of 21820145664

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 20
• Sum of prime factors: 166

Divisors of 21820145664

• Number of divisors d(n): 272
• Complete list of divisors:
  1 2 3 4 6 8 12 16 24 29 32 43 48 58 64 86 87 89 96 116 128 129 172 174 178 192 232 256 258 267 344 348 356 384 464 512 516 534 688 696 712 768 928 1024 1032 1068 1247 1376 1392 1424 1536 1856 2048 2064 2136 2494 2581 2752 2784 2848 3072 3712 3741 3827 4096 4128 4272 4988 5162 5504 5568 5696 6144 7424 7482 7654 7743 8192 8256 8544 9976 10324 11008 11136 11392 11481 12288 14848 14964 15308 15486 16384 16512 17088 19952 20648 22016 22272 22784 22962 24576 29696 29928 30616 30972 32768 33024 34176 39904 41296 44032 44544 45568 45924 49152 59392 59856 61232 61944 65536 66048 68352 79808 82592 88064 89088 91136 91848 98304 110983 118784 119712 122464 123888 132096 136704 159616 165184 176128 178176 182272 183696 196608 221966 237568 239424 244928 247776 264192 273408 319232 330368 332949 352256 356352 364544 367392 443932 475136 478848 489856 495552 528384 546816 638464 660736 665898 704512 712704 729088 734784 887864 950272 957696 979712 991104 1056768 1093632 1276928 1321472 1331796 1409024 1425408 1458176 1469568 1775728 1900544 1915392 1959424 1982208 2113536 2187264 2553856 2642944 2663592 2818048 2850816 2916352 2939136 3551456 3830784 3918848 3964416 4227072 4374528 5107712 5285888 5327184 5701632 5832704 5878272 7102912 7661568 7837696 7928832 8454144 8749056 10215424 10571776 10654368 11756544 14205824 15323136 15675392 15857664 17498112 20430848 21143552 21308736 23513088 28411648 30646272 31350784 31715328 40861696 42287104 42617472 47026176 56823296 61292544 62701568 63430656 81723392 84574208 85234944 94052352 113646592 122585088 125403136 126861312 169148416 170469888 188104704 227293184 245170176 250806272 253722624 340939776 376209408 454586368 507445248 681879552 752418816 909172736 1363759104 1818345472 2727518208 3636690944 5455036416 7273381888 10910072832 21820145664
• Sum of all divisors σ(n): 62284939200
• Sum of proper divisors (its aliquot sum) s(n): 40464793536
• 21820145664 is an abundant number, because the sum of its proper divisors (40464793536) is greater than itself. Its abundance is 18644647872

Bases of 21820145664

• Binary: 10100010100100101010000000000000000₂
• Hexadecimal: 0x514950000
• Base-36: A0V5G5C

Squares and roots of 21820145664

• 21820145664 squared (21820145664²) is 476118756798178000896
• 21820145664 cubed (21820145664³) is 10388980626698834229351042514944
• The square root of 21820145664 is 147716.4366751379
• The cube root of 21820145664 is 2794.3826864743

Scales and comparisons

• 21,820,145,664 seconds is equal to 693 years, 42 weeks, 1 day, 23 hours, 34 minutes, 24 seconds.
• To count from 1 to 21,820,145,664 would take you about one thousand, three hundred eighty-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 21820145664 cubic inches would be around 232.9 feet tall.

Recreational maths with 21820145664

• 21820145664 backwards is 46654102812
• The number of decimal digits it has is: 11
• The sum of 21820145664's digits is 39
• More coming soon!