1388970072

Names of 1388970072

• Cardinal: 1388970072 can be written as One billion, three hundred eighty-eight million, nine hundred seventy thousand and seventy-two.

Scientific notation

• Scientific notation: 1.388970072 × 10⁹

Factors of 1388970072

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 6938

Divisors of 1388970072

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 18 19 21 24 27 28 36 38 42 49 54 56 57 63 72 76 84 98 108 114 126 133 147 152 168 171 189 196 216 228 252 266 294 342 378 392 399 441 456 504 513 532 588 684 756 798 882 931 1026 1064 1176 1197 1323 1368 1512 1596 1764 1862 2052 2394 2646 2793 3192 3528 3591 3724 4104 4788 5292 5586 6907 7182 7448 8379 9576 10584 11172 13814 14364 16758 20721 22344 25137 27628 28728 33516 41442 48349 50274 55256 62163 67032 82884 96698 100548 124326 131233 145047 165768 186489 193396 201096 248652 262466 290094 338443 372978 386792 393699 435141 497304 524932 580188 676886 745956 787398 870282 918631 1015329 1049864 1160376 1181097 1305423 1353772 1491912 1574796 1740564 1837262 2030658 2362194 2610846 2707544 2755893 3045987 3149592 3481128 3543291 3674524 4061316 4724388 5221692 5511786 6091974 6430417 7086582 7349048 8122632 8267679 9137961 9448776 10443384 11023572 12183948 12860834 14173164 16535358 18275922 19291251 22047144 24367896 24803037 25721668 28346328 33070716 36551844 38582502 49606074 51443336 57873753 66141432 73103688 77165004 99212148 115747506 154330008 173621259 198424296 231495012 347242518 462990024 694485036 1388970072
• Sum of all divisors σ(n): 4725072000
• Sum of proper divisors (its aliquot sum) s(n): 3336101928
• 1388970072 is an abundant number, because the sum of its proper divisors (3336101928) is greater than itself. Its abundance is 1947131856

Bases of 1388970072

• Binary: 1010010110010100000000001011000₂
• Hexadecimal: 0x52CA0058
• Base-36: MYYG60

Squares and roots of 1388970072

• 1388970072 squared (1388970072²) is 1929237860911685184
• 1388970072 cubed (1388970072³) is 2679653650575629355661813248
• The square root of 1388970072 is 37268.8887948111
• The cube root of 1388970072 is 1115.7433217065

Scales and comparisons

• 1,388,970,072 seconds is equal to 44 years, 8 weeks, 4 days, 1 hour, 1 minute, 12 seconds.
• To count from 1 to 1,388,970,072 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 1388970072 cubic inches would be around 93 feet tall.

Recreational maths with 1388970072

• 1388970072 backwards is 2700798831
• The number of decimal digits it has is: 10
• The sum of 1388970072's digits is 45
• More coming soon!