145121481720

Names of 145121481720

• Cardinal: 145121481720 can be written as One hundred forty-five billion, one hundred twenty-one million, four hundred eighty-one thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 1.4512148172 × 10¹¹

Factors of 145121481720

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 565443

Divisors of 145121481720

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 18 20 23 24 30 31 36 40 45 46 60 62 69 72 90 92 93 115 120 124 138 155 180 184 186 207 230 248 276 279 310 345 360 372 414 460 465 552 558 620 690 713 744 828 920 930 1035 1116 1240 1380 1395 1426 1656 1860 2070 2139 2232 2760 2790 2852 3565 3720 4140 4278 5580 5704 6417 7130 8280 8556 10695 11160 12834 14260 17112 21390 25668 28520 32085 42780 51336 64170 85560 128340 256680 565379 1130758 1696137 2261516 2826895 3392274 4523032 5088411 5653790 6784548 8480685 10176822 11307580 13003717 13569096 16961370 17526749 20353644 22615160 25442055 26007434 33922740 35053498 39011151 40707288 50884110 52014868 52580247 65018585 67845480 70106996 78022302 87633745 101768220 104029736 105160494 117033453 130037170 140213992 156044604 157740741 175267490 195055755 203536440 210320988 234066906 260074340 262901235 312089208 315481482 350534980 390111510 403115227 420641976 468133812 520148680 525802470 585167265 630962964 701069960 780223020 788703705 806230454 936267624 1051604940 1170334530 1209345681 1261925928 1560446040 1577407410 1612460908 2015576135 2103209880 2340669060 2418691362 3154814820 3224921816 3628037043 4031152270 4681338120 4837382724 6046728405 6309629640 7256074086 8062304540 9674765448 12093456810 14512148172 16124609080 18140185215 24186913620 29024296344 36280370430 48373827240 72560740860 145121481720
• Sum of all divisors σ(n): 508027852800
• Sum of proper divisors (its aliquot sum) s(n): 362906371080
• 145121481720 is an abundant number, because the sum of its proper divisors (362906371080) is greater than itself. Its abundance is 217784889360

Bases of 145121481720

• Binary: 10000111001001111010100001001111111000₂
• Hexadecimal: 0x21C9EA13F8
• Base-36: 1UO1KZY0

Squares and roots of 145121481720

• 145121481720 squared (145121481720²) is 21060244456608294158400
• 145121481720 cubed (145121481720³) is 3056293880928411893908628384448000
• The square root of 145121481720 is 380948.1352100309
• The cube root of 145121481720 is 5255.0546236207

Scales and comparisons

• 145,121,481,720 seconds is equal to 4,614 years, 21 weeks, 3 days, 18 hours, 42 minutes.
• To count from 1 to 145,121,481,720 would take you about nine thousand, two hundred twenty-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 145121481720 cubic inches would be around 437.9 feet tall.

Recreational maths with 145121481720

• 145121481720 backwards is 027184121541
• 145121481720 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 145121481720's digits is 36
• More coming soon!