20961180720

Names of 20961180720

• Cardinal: 20961180720 can be written as Twenty billion, nine hundred sixty-one million, one hundred eighty thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 2.096118072 × 10¹⁰

Factors of 20961180720

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 939162

Divisors of 20961180720

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 31 36 40 45 48 60 62 72 80 90 93 120 124 144 155 180 186 240 248 279 310 360 372 465 496 558 620 720 744 930 1116 1240 1395 1488 1860 2232 2480 2790 3720 4464 5580 7440 11160 22320 939121 1878242 2817363 3756484 4695605 5634726 7512968 8452089 9391210 11269452 14086815 15025936 16904178 18782420 22538904 28173630 29112751 33808356 37564840 42260445 45077808 56347260 58225502 67616712 75129680 84520890 87338253 112694520 116451004 135233424 145563755 169041780 174676506 225389040 232902008 262014759 291127510 338083560 349353012 436691265 465804016 524029518 582255020 676167120 698706024 873382530 1048059036 1164510040 1310073795 1397412048 1746765060 2096118072 2329020080 2620147590 3493530120 4192236144 5240295180 6987060240 10480590360 20961180720
• Sum of all divisors σ(n): 72665503872
• Sum of proper divisors (its aliquot sum) s(n): 51704323152
• 20961180720 is an abundant number, because the sum of its proper divisors (51704323152) is greater than itself. Its abundance is 30743142432

Bases of 20961180720

• Binary: 10011100001011000100011110000110000₂
• Hexadecimal: 0x4E1623C30
• Base-36: 9MNQUK0

Squares and roots of 20961180720

• 20961180720 squared (20961180720²) is 439371097176499718400
• 20961180720 cubed (20961180720³) is 9209736971061292334411509248000
• The square root of 20961180720 is 144779.7662658701
• The cube root of 20961180720 is 2757.2231365335

Scales and comparisons

• 20,961,180,720 seconds is equal to 666 years, 26 weeks, 6 hours, 12 minutes.
• To count from 1 to 20,961,180,720 would take you about one thousand, three hundred thirty-three 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 20961180720 cubic inches would be around 229.8 feet tall.

Recreational maths with 20961180720

• 20961180720 backwards is 02708116902
• 20961180720 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 20961180720's digits is 36
• More coming soon!