1218429872

Names of 1218429872

• Cardinal: 1218429872 can be written as One billion, two hundred eighteen million, four hundred twenty-nine thousand, eight hundred seventy-two.

Scientific notation

• Scientific notation: 1.218429872 × 10⁹

Factors of 1218429872

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 310

Divisors of 1218429872

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 4 8 11 16 19 22 38 44 76 88 127 151 152 176 209 254 302 304 361 418 508 604 722 836 1016 1208 1397 1444 1661 1672 2032 2413 2416 2794 2869 2888 3322 3344 3971 4826 5588 5738 5776 6644 7942 9652 11176 11476 13288 15884 19177 19304 22352 22952 26543 26576 31559 31768 38354 38608 45847 45904 53086 54511 63118 63536 76708 91694 106172 109022 126236 153416 183388 210947 212344 218044 252472 306832 364363 366776 421894 424688 436088 504317 504944 599621 728726 733552 843788 872176 1008634 1199242 1457452 1687576 2017268 2398484 2914904 3375152 4007993 4034536 4796968 5829808 6922897 8015986 8069072 9593936 13845794 16031972 27691588 32063944 55383176 64127888 76151867 110766352 152303734 304607468 609214936 1218429872
• Sum of all divisors σ(n): 2757537792
• Sum of proper divisors (its aliquot sum) s(n): 1539107920
• 1218429872 is an abundant number, because the sum of its proper divisors (1539107920) is greater than itself. Its abundance is 320678048

Bases of 1218429872

• Binary: 1001000100111111100001110110000₂
• Hexadecimal: 0x489FC3B0
• Base-36: K5F6I8

Squares and roots of 1218429872

• 1218429872 squared (1218429872²) is 1484571352981936384
• 1218429872 cubed (1218429872³) is 1808846083588647566669262848
• The square root of 1218429872 is 34906.0148398525
• The cube root of 1218429872 is 1068.0711376069

Scales and comparisons

• 1,218,429,872 seconds is equal to 38 years, 38 weeks, 4 days, 4 hours, 44 minutes, 32 seconds.
• To count from 1 to 1,218,429,872 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 1218429872 cubic inches would be around 89 feet tall.

Recreational maths with 1218429872

• 1218429872 backwards is 2789248121
• 1218429872 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 1218429872's digits is 44
• More coming soon!