1388644992

Names of 1388644992

• Cardinal: 1388644992 can be written as One billion, three hundred eighty-eight million, six hundred forty-four thousand, nine hundred ninety-two.

Scientific notation

• Scientific notation: 1.388644992 × 10⁹

Factors of 1388644992

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 1014

Divisors of 1388644992

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 27 28 32 36 42 48 54 56 61 63 64 72 84 96 108 112 122 126 128 144 168 183 189 192 216 224 244 252 288 336 366 378 384 427 432 448 488 504 549 576 672 732 756 854 864 896 941 976 1008 1098 1152 1281 1344 1464 1512 1647 1708 1728 1882 1952 2016 2196 2562 2688 2823 2928 3024 3294 3416 3456 3764 3843 3904 4032 4392 5124 5646 5856 6048 6587 6588 6832 7528 7686 7808 8064 8469 8784 10248 11292 11529 11712 12096 13174 13176 13664 15056 15372 16938 17568 19761 20496 22584 23058 23424 24192 25407 26348 26352 27328 30112 30744 33876 35136 39522 40992 45168 46116 50814 52696 52704 54656 57401 59283 60224 61488 67752 70272 79044 81984 90336 92232 101628 105392 105408 114802 118566 120448 122976 135504 158088 163968 172203 177849 180672 184464 203256 210784 210816 229604 237132 245952 271008 316176 344406 355698 361344 368928 401807 406512 421568 459208 474264 491904 516609 542016 632352 688812 711396 737856 803614 813024 843136 918416 948528 1033218 1084032 1205421 1264704 1377624 1422792 1475712 1549827 1607228 1626048 1836832 1897056 2066436 2410842 2529408 2755248 2845584 3099654 3214456 3252096 3616263 3673664 3794112 4132872 4821684 5510496 5691168 6199308 6428912 7232526 7347328 7588224 8265744 9643368 10848789 11020992 11382336 12398616 12857824 14465052 16531488 19286736 21697578 22041984 22764672 24797232 25715648 28930104 33062976 38573472 43395156 49594464 51431296 57860208 66125952 77146944 86790312 99188928 115720416 154293888 173580624 198377856 231440832 347161248 462881664 694322496 1388644992
• Sum of all divisors σ(n): 4765766400
• Sum of proper divisors (its aliquot sum) s(n): 3377121408
• 1388644992 is an abundant number, because the sum of its proper divisors (3377121408) is greater than itself. Its abundance is 1988476416

Bases of 1388644992

• Binary: 1010010110001010000101010000000₂
• Hexadecimal: 0x52C50A80
• Base-36: MYRHC0

Squares and roots of 1388644992

• 1388644992 squared (1388644992²) is 1928334913806680064
• 1388644992 cubed (1388644992³) is 2677772620956397927019839488
• The square root of 1388644992 is 37264.5272611903
• The cube root of 1388644992 is 1115.6562706015

Scales and comparisons

• 1,388,644,992 seconds is equal to 44 years, 8 weeks, 6 hours, 43 minutes, 12 seconds.
• To count from 1 to 1,388,644,992 would take you about eighty-eight 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 1388644992 cubic inches would be around 93 feet tall.

Recreational maths with 1388644992

• 1388644992 backwards is 2994468831
• 1388644992 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 1388644992's digits is 54
• More coming soon!