1218232140

Names of 1218232140

• Cardinal: 1218232140 can be written as One billion, two hundred eighteen million, two hundred thirty-two thousand, one hundred forty.

Scientific notation

• Scientific notation: 1.21823214 × 10⁹

Factors of 1218232140

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 271

Divisors of 1218232140

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 5 6 10 12 15 20 30 43 60 79 86 129 139 158 172 215 237 258 278 316 395 417 430 474 516 556 645 695 790 834 860 948 1185 1290 1390 1580 1668 1849 2085 2370 2580 2780 3397 3698 4170 4740 5547 5977 6794 7396 8340 9245 10191 10981 11094 11954 13588 16985 17931 18490 20382 21962 22188 23908 27735 29885 32943 33970 35862 36980 40764 43924 50955 54905 55470 59770 65886 67940 71724 89655 101910 109810 110940 119540 131772 146071 164715 179310 203820 219620 257011 292142 329430 358620 438213 472183 514022 584284 658860 730355 771033 876426 944366 1028044 1285055 1416549 1460710 1542066 1752852 1888732 2191065 2360915 2570110 2833098 2921420 3084132 3855165 4382130 4721830 5140220 5666196 7082745 7710330 8764260 9443660 14165490 15420660 20303869 28330980 40607738 60911607 81215476 101519345 121823214 203038690 243646428 304558035 406077380 609116070 1218232140
• Sum of all divisors σ(n): 3561868800
• Sum of proper divisors (its aliquot sum) s(n): 2343636660
• 1218232140 is an abundant number, because the sum of its proper divisors (2343636660) is greater than itself. Its abundance is 1125404520

Bases of 1218232140

• Binary: 1001000100111001011111101001100₂
• Hexadecimal: 0x489CBF4C
• Base-36: K5AXXO

Squares and roots of 1218232140

• 1218232140 squared (1218232140²) is 1484089546928979600
• 1218232140 cubed (1218232140³) is 1807965584706921246124344000
• The square root of 1218232140 is 34903.1823763965
• The cube root of 1218232140 is 1068.0133574337

Scales and comparisons

• 1,218,232,140 seconds is equal to 38 years, 38 weeks, 1 day, 21 hours, 49 minutes.
• To count from 1 to 1,218,232,140 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 1218232140 cubic inches would be around 89 feet tall.

Recreational maths with 1218232140

• 1218232140 backwards is 0412328121
• The number of decimal digits it has is: 10
• The sum of 1218232140's digits is 24
• More coming soon!