1138238720

Names of 1138238720

• Cardinal: 1138238720 can be written as One billion, one hundred thirty-eight million, two hundred thirty-eight thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 1.13823872 × 10⁹

Factors of 1138238720

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 71

Divisors of 1138238720

• Number of divisors d(n): 162
• Complete list of divisors:
  1 2 4 5 8 10 16 20 23 32 40 41 46 64 80 82 92 115 128 160 164 184 205 230 256 320 328 368 410 460 529 640 656 736 820 920 943 1058 1280 1312 1472 1640 1681 1840 1886 2116 2624 2645 2944 3280 3362 3680 3772 4232 4715 5248 5290 5888 6560 6724 7360 7544 8405 8464 9430 10496 10580 13120 13448 14720 15088 16810 16928 18860 21160 21689 26240 26896 29440 30176 33620 33856 37720 38663 42320 43378 52480 53792 60352 67240 67712 75440 77326 84640 86756 107584 108445 120704 134480 135424 150880 154652 169280 173512 193315 215168 216890 241408 268960 301760 309304 338560 347024 386630 430336 433780 537920 603520 618608 677120 694048 773260 867560 889249 1075840 1207040 1237216 1388096 1546520 1735120 1778498 2151680 2474432 2776192 3093040 3470240 3556996 4446245 4948864 5552384 6186080 6940480 7113992 8892490 9897728 12372160 13880960 14227984 17784980 24744320 27761920 28455968 35569960 49488640 56911936 71139920 113823872 142279840 227647744 284559680 569119360 1138238720
• Sum of all divisors σ(n): 2921343054
• Sum of proper divisors (its aliquot sum) s(n): 1783104334
• 1138238720 is an abundant number, because the sum of its proper divisors (1783104334) is greater than itself. Its abundance is 644865614

Bases of 1138238720

• Binary: 1000011110110000010010100000000₂
• Hexadecimal: 0x43D82500
• Base-36: ITOEM8

Squares and roots of 1138238720

• 1138238720 squared (1138238720²) is 1295587383707238400
• 1138238720 cubed (1138238720³) is 1474687725279075891150848000
• The square root of 1138238720 is 33737.7936445169
• The cube root of 1138238720 is 1044.1056640115

Scales and comparisons

• 1,138,238,720 seconds is equal to 36 years, 10 weeks, 1 hour, 25 minutes, 20 seconds.
• To count from 1 to 1,138,238,720 would take you about seventy-two 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 1138238720 cubic inches would be around 87 feet tall.

Recreational maths with 1138238720

• 1138238720 backwards is 0278328311
• The number of decimal digits it has is: 10
• The sum of 1138238720's digits is 35
• More coming soon!