1388408868

Names of 1388408868

• Cardinal: 1388408868 can be written as One billion, three hundred eighty-eight million, four hundred eight thousand, eight hundred sixty-eight.

Scientific notation

• Scientific notation: 1.388408868 × 10⁹

Factors of 1388408868

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 13597

Divisors of 1388408868

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 6 7 9 11 12 14 18 21 22 28 33 36 37 42 44 63 66 74 77 84 99 111 126 132 148 154 198 222 231 252 259 308 333 396 407 444 462 518 666 693 777 814 924 1036 1221 1332 1386 1554 1628 2331 2442 2772 2849 3108 3663 4662 4884 5698 7326 8547 9324 11396 13537 14652 17094 25641 27074 34188 40611 51282 54148 81222 94759 102564 121833 148907 162444 189518 243666 284277 297814 379036 446721 487332 500869 568554 595628 852831 893442 1001738 1042349 1137108 1340163 1502607 1705662 1786884 2003476 2084698 2680326 3005214 3127047 3411324 3506083 4169396 4507821 5360652 5509559 6010428 6254094 7012166 9015642 9381141 10518249 11019118 12508188 14024332 16528677 18031284 18762282 21036498 22038236 31554747 33057354 37524564 38566913 42072996 49586031 63109494 66114708 77133826 99172062 115700739 126218988 154267652 198344124 231401478 347102217 462802956 694204434 1388408868
• Sum of all divisors σ(n): 4494182784
• Sum of proper divisors (its aliquot sum) s(n): 3105773916
• 1388408868 is an abundant number, because the sum of its proper divisors (3105773916) is greater than itself. Its abundance is 1717365048

Bases of 1388408868

• Binary: 1010010110000010111000000100100₂
• Hexadecimal: 0x52C17024
• Base-36: MYMF50

Squares and roots of 1388408868

• 1388408868 squared (1388408868²) is 1927679184741041424
• 1388408868 cubed (1388408868³) is 2676406874753472196636948032
• The square root of 1388408868 is 37261.3589124175
• The cube root of 1388408868 is 1115.5930319395

Scales and comparisons

• 1,388,408,868 seconds is equal to 44 years, 7 weeks, 4 days, 13 hours, 7 minutes, 48 seconds.
• To count from 1 to 1,388,408,868 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 1388408868 cubic inches would be around 93 feet tall.

Recreational maths with 1388408868

• 1388408868 backwards is 8688048831
• The number of decimal digits it has is: 10
• The sum of 1388408868's digits is 54
• More coming soon!