1221648890

Names of 1221648890

• Cardinal: 1221648890 can be written as One billion, two hundred twenty-one million, six hundred forty-eight thousand, eight hundred ninety.

Scientific notation

• Scientific notation: 1.22164889 × 10⁹

Factors of 1221648890

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 274

Divisors of 1221648890

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 5 7 10 11 14 19 22 35 38 49 55 70 77 79 95 98 110 133 151 154 158 190 209 245 266 302 385 395 418 490 539 553 665 755 770 790 869 931 1045 1057 1078 1106 1330 1463 1501 1510 1661 1738 1862 2090 2114 2695 2765 2869 2926 3002 3322 3871 4345 4655 5285 5390 5530 5738 6083 7315 7399 7505 7742 8305 8690 9310 10241 10507 10570 11627 11929 12166 14345 14630 14798 15010 16511 16610 19355 20083 20482 21014 23254 23858 28690 30415 31559 33022 36995 38710 40166 42581 51205 52535 58135 59645 60830 63118 73549 73990 81389 82555 83503 85162 100415 102410 105070 115577 116270 119290 131219 140581 147098 157795 162778 165110 167006 200830 212905 220913 226651 231154 262438 281162 315590 367745 406945 417515 425810 441826 453302 577885 584521 656095 702905 735490 809039 813890 835030 918533 1104565 1133255 1155770 1169042 1312190 1405810 1546391 1586557 1618078 1837066 2209130 2266510 2493161 2922605 3092782 3173114 4045195 4592665 4986322 5845210 6429731 7731955 7932785 8090390 9185330 11105899 12465805 12859462 15463910 15865570 17452127 22211798 24931610 32148655 34904254 55529495 64297310 87260635 111058990 122164889 174521270 244329778 610824445 1221648890
• Sum of all divisors σ(n): 2994278400
• Sum of proper divisors (its aliquot sum) s(n): 1772629510
• 1221648890 is an abundant number, because the sum of its proper divisors (1772629510) is greater than itself. Its abundance is 550980620

Bases of 1221648890

• Binary: 1001000110100001110000111111010₂
• Hexadecimal: 0x48D0E1FA
• Base-36: K7C6BE

Squares and roots of 1221648890

• 1221648890 squared (1221648890²) is 1492426010438232100
• 1221648890 cubed (1221648890³) is 1823220579058994658527369000
• The square root of 1221648890 is 34952.0942147963
• The cube root of 1221648890 is 1069.0109035977

Scales and comparisons

• 1,221,648,890 seconds is equal to 38 years, 43 weeks, 6 days, 10 hours, 54 minutes, 50 seconds.
• To count from 1 to 1,221,648,890 would take you about seventy-seven 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 1221648890 cubic inches would be around 89.1 feet tall.

Recreational maths with 1221648890

• 1221648890 backwards is 0988461221
• The number of decimal digits it has is: 10
• The sum of 1221648890's digits is 41
• More coming soon!