1218314240

Names of 1218314240

• Cardinal: 1218314240 can be written as One billion, two hundred eighteen million, three hundred fourteen thousand, two hundred forty.

Scientific notation

• Scientific notation: 1.21831424 × 10⁹

Factors of 1218314240

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 21
• Sum of prime factors: 31

Divisors of 1218314240

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 4 5 8 10 11 13 16 20 22 26 32 40 44 52 55 64 65 80 88 104 110 128 130 143 160 169 176 208 220 256 260 286 320 338 352 416 440 512 520 572 640 676 704 715 832 845 880 1024 1040 1144 1280 1352 1408 1430 1664 1690 1760 1859 2048 2080 2288 2560 2704 2816 2860 3328 3380 3520 3718 4096 4160 4576 5120 5408 5632 5720 6656 6760 7040 7436 8192 8320 9152 9295 10240 10816 11264 11440 13312 13520 14080 14872 16384 16640 18304 18590 20480 21632 22528 22880 26624 27040 28160 29744 32768 33280 36608 37180 40960 43264 45056 45760 53248 54080 56320 59488 65536 66560 73216 74360 81920 86528 90112 91520 106496 108160 112640 118976 131072 133120 146432 148720 163840 173056 180224 183040 212992 216320 225280 237952 266240 292864 297440 327680 346112 360448 366080 425984 432640 450560 475904 532480 585728 594880 655360 692224 720896 732160 851968 865280 901120 951808 1064960 1171456 1189760 1384448 1441792 1464320 1703936 1730560 1802240 1903616 2129920 2342912 2379520 2768896 2928640 3461120 3604480 3807232 4259840 4685824 4759040 5537792 5857280 6922240 7208960 7614464 8519680 9371648 9518080 11075584 11714560 13844480 15228928 18743296 19036160 22151168 23429120 27688960 30457856 38072320 46858240 55377920 60915712 76144640 93716480 110755840 121831424 152289280 243662848 304578560 609157120 1218314240
• Sum of all divisors σ(n): 3453996168
• Sum of proper divisors (its aliquot sum) s(n): 2235681928
• 1218314240 is an abundant number, because the sum of its proper divisors (2235681928) is greater than itself. Its abundance is 1017367688

Bases of 1218314240

• Binary: 1001000100111100000000000000000₂
• Hexadecimal: 0x489E0000
• Base-36: K5CPA8

Squares and roots of 1218314240

• 1218314240 squared (1218314240²) is 1484289587386777600
• 1218314240 cubed (1218314240³) is 1808331140597035537793024000
• The square root of 1218314240 is 34904.3584671027
• The cube root of 1218314240 is 1068.0373490097

Scales and comparisons

• 1,218,314,240 seconds is equal to 38 years, 38 weeks, 2 days, 20 hours, 37 minutes, 20 seconds.
• To count from 1 to 1,218,314,240 would take you about seventy-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 1218314240 cubic inches would be around 89 feet tall.

Recreational maths with 1218314240

• 1218314240 backwards is 0424138121
• 1218314240 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 1218314240's digits is 26
• More coming soon!