1272742128

Names of 1272742128

• Cardinal: 1272742128 can be written as One billion, two hundred seventy-two million, seven hundred forty-two thousand, one hundred twenty-eight.

Scientific notation

• Scientific notation: 1.272742128 × 10⁹

Factors of 1272742128

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 286

Divisors of 1272742128

• Number of divisors d(n): 240
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 17 18 21 24 28 34 36 42 48 51 56 63 68 72 84 102 112 119 126 136 144 153 168 204 238 252 257 272 289 306 336 357 408 476 504 514 578 612 714 771 816 867 952 1008 1028 1071 1156 1224 1428 1542 1734 1799 1904 2023 2056 2142 2312 2313 2448 2601 2856 3084 3468 3598 4046 4112 4284 4369 4624 4626 4913 5202 5397 5712 6069 6168 6936 7196 8092 8568 8738 9252 9826 10404 10794 12138 12336 13107 13872 14392 14739 16184 16191 17136 17476 18207 18504 19652 20808 21588 24276 26214 28784 29478 30583 32368 32382 34391 34952 36414 37008 39304 39321 41616 43176 44217 48552 52428 58956 61166 64764 68782 69904 72828 74273 78608 78642 86352 88434 91749 97104 103173 104856 117912 122332 129528 137564 145656 148546 157284 176868 183498 206346 209712 222819 235824 244664 259056 275128 275247 291312 297092 309519 314568 353736 366996 412692 445638 489328 519911 550256 550494 594184 619038 629136 668457 707472 733992 825384 891276 1039822 1100988 1188368 1238076 1262641 1336914 1467984 1559733 1650768 1782552 2079644 2201976 2476152 2525282 2673828 3119466 3565104 3787923 4159288 4403952 4679199 4952304 5050564 5347656 6238932 7575846 8318576 8838487 9358398 10101128 10695312 11363769 12477864 15151692 17676974 18716796 20202256 22727538 24955728 26515461 30303384 35353948 37433592 45455076 53030922 60606768 70707896 74867184 79546383 90910152 106061844 141415792 159092766 181820304 212123688 318185532 424247376 636371064 1272742128
• Sum of all divisors σ(n): 4341954240
• Sum of proper divisors (its aliquot sum) s(n): 3069212112
• 1272742128 is an abundant number, because the sum of its proper divisors (3069212112) is greater than itself. Its abundance is 1796469984

Bases of 1272742128

• Binary: 1001011110111001000000011110000₂
• Hexadecimal: 0x4BDC80F0
• Base-36: L1RA40

Squares and roots of 1272742128

• 1272742128 squared (1272742128²) is 1619872524385968384
• 1272742128 cubed (1272742128³) is 2061680003775729294392881152
• The square root of 1272742128 is 35675.5116010969
• The cube root of 1272742128 is 1083.7109789873

Scales and comparisons

• 1,272,742,128 seconds is equal to 40 years, 24 weeks, 2 days, 19 hours, 28 minutes, 48 seconds.
• To count from 1 to 1,272,742,128 would take you about eighty 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 1272742128 cubic inches would be around 90.3 feet tall.

Recreational maths with 1272742128

• 1272742128 backwards is 8212472721
• 1272742128 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 1272742128's digits is 36
• More coming soon!