121620928

Names of 121620928

• Cardinal: 121620928 can be written as One hundred twenty-one million, six hundred twenty thousand, nine hundred twenty-eight.

Scientific notation

• Scientific notation: 1.21620928 × 10⁸

Factors of 121620928

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 260

Divisors of 121620928

• Number of divisors d(n): 112
• Complete list of divisors:
  1 2 4 8 11 13 16 22 26 32 44 52 64 88 97 104 137 143 176 194 208 274 286 352 388 416 548 572 704 776 832 1067 1096 1144 1261 1507 1552 1781 2134 2192 2288 2522 3014 3104 3562 4268 4384 4576 5044 6028 6208 7124 8536 8768 9152 10088 12056 13289 13871 14248 17072 19591 20176 24112 26578 27742 28496 34144 39182 40352 48224 53156 55484 56992 68288 78364 80704 96448 106312 110968 113984 146179 156728 172757 212624 221936 292358 313456 345514 425248 443872 584716 626912 691028 850496 887744 1169432 1253824 1382056 1900327 2338864 2764112 3800654 4677728 5528224 7601308 9355456 11056448 15202616 30405232 60810464 121620928
• Sum of all divisors σ(n): 288548064
• Sum of proper divisors (its aliquot sum) s(n): 166927136
• 121620928 is an abundant number, because the sum of its proper divisors (166927136) is greater than itself. Its abundance is 45306208

Bases of 121620928

• Binary: 111001111111100100111000000₂
• Hexadecimal: 0x73FC9C0
• Base-36: 20ERB4

Squares and roots of 121620928

• 121620928 squared (121620928²) is 14791650127581184
• 121620928 cubed (121620928³) is 1798974215167741993418752
• The square root of 121620928 is 11028.1878837821
• The cube root of 121620928 is 495.4533519679

Scales and comparisons

• 121,620,928 seconds is equal to 3 years, 45 weeks, 15 hours, 35 minutes, 28 seconds.
• To count from 1 to 121,620,928 would take you about five 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 121620928 cubic inches would be around 41.3 feet tall.

Recreational maths with 121620928

• 121620928 backwards is 829026121
• The number of decimal digits it has is: 9
• The sum of 121620928's digits is 31
• More coming soon!