28931713920

Names of 28931713920

• Cardinal: 28931713920 can be written as Twenty-eight billion, nine hundred thirty-one million, seven hundred thirteen thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 2.893171392 × 10¹⁰

Factors of 28931713920

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 1674299

Divisors of 28931713920

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 32 36 40 45 48 54 60 64 72 80 90 96 108 120 128 135 144 160 180 192 216 240 270 288 320 360 384 432 480 540 576 640 720 864 960 1080 1152 1440 1728 1920 2160 2880 3456 4320 5760 8640 17280 1674289 3348578 5022867 6697156 8371445 10045734 13394312 15068601 16742890 20091468 25114335 26788624 30137202 33485780 40182936 45205803 50228670 53577248 60274404 66971560 75343005 80365872 90411606 100457340 107154496 120548808 133943120 150686010 160731744 180823212 200914680 214308992 226029015 241097616 267886240 301372020 321463488 361646424 401829360 452058030 482195232 535772480 602744040 642926976 723292848 803658720 904116060 964390464 1071544960 1205488080 1446585696 1607317440 1808232120 1928780928 2410976160 2893171392 3214634880 3616464240 4821952320 5786342784 7232928480 9643904640 14465856960 28931713920
• Sum of all divisors σ(n): 102466548000
• Sum of proper divisors (its aliquot sum) s(n): 73534834080
• 28931713920 is an abundant number, because the sum of its proper divisors (73534834080) is greater than itself. Its abundance is 44603120160

Bases of 28931713920

• Binary: 11010111100011101101110101110000000₂
• Hexadecimal: 0x6BC76EB80
• Base-36: DAH71C0

Squares and roots of 28931713920

• 28931713920 squared (28931713920²) is 837044070348721766400
• 28931713920 cubed (28931713920³) is 24217119581761572783161868288000
• The square root of 28931713920 is 170093.2506597485
• The cube root of 28931713920 is 3069.9034767547

Scales and comparisons

• 28,931,713,920 seconds is equal to 919 years, 48 weeks, 5 days, 19 hours, 12 minutes.
• To count from 1 to 28,931,713,920 would take you about one thousand, eight hundred thirty-nine 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 28931713920 cubic inches would be around 255.8 feet tall.

Recreational maths with 28931713920

• 28931713920 backwards is 02931713982
• 28931713920 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 28931713920's digits is 45
• More coming soon!