1221948585

Names of 1221948585

• Cardinal: 1221948585 can be written as One billion, two hundred twenty-one million, nine hundred forty-eight thousand, five hundred eighty-five.

Scientific notation

• Scientific notation: 1.221948585 × 10⁹

Factors of 1221948585

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 573

Divisors of 1221948585

• Number of divisors d(n): 144
• Complete list of divisors:
  1 3 5 9 11 13 15 27 33 39 45 55 65 81 99 117 135 143 165 169 195 243 297 351 405 429 495 507 541 585 715 845 891 1053 1215 1287 1485 1521 1623 1755 1859 2145 2535 2673 2705 3159 3861 4455 4563 4869 5265 5577 5951 6435 7033 7605 8115 9295 11583 13365 13689 14607 15795 16731 17853 19305 21099 22815 24345 27885 29755 34749 35165 41067 43821 50193 53559 57915 63297 68445 73035 77363 83655 89265 91429 105495 131463 150579 160677 173745 189891 205335 219105 232089 250965 267795 274287 316485 386815 451737 457145 482031 569673 657315 696267 752895 803385 822861 949455 1005719 1160445 1371435 1446093 1709019 2088801 2258685 2410155 2468583 2848365 3017157 3481335 4114305 5028595 6266403 7230465 7405749 8545095 9051471 10444005 12342915 15085785 18799209 22217247 27154413 31332015 37028745 45257355 81463239 93996045 111086235 135772065 244389717 407316195 1221948585
• Sum of all divisors σ(n): 2599466688
• Sum of proper divisors (its aliquot sum) s(n): 1377518103
• 1221948585 is an abundant number, because the sum of its proper divisors (1377518103) is greater than itself. Its abundance is 155569518

Bases of 1221948585

• Binary: 1001000110101010111010010101001₂
• Hexadecimal: 0x48D574A9
• Base-36: K7ILK9

Squares and roots of 1221948585

• 1221948585 squared (1221948585²) is 1493158344383502225
• 1221948585 cubed (1221948585³) is 1824562726100363241183101625
• The square root of 1221948585 is 34956.3811771185
• The cube root of 1221948585 is 1069.0983130629

Scales and comparisons

• 1,221,948,585 seconds is equal to 38 years, 44 weeks, 2 days, 22 hours, 9 minutes, 45 seconds.
• To count from 1 to 1,221,948,585 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 1221948585 cubic inches would be around 89.1 feet tall.

Recreational maths with 1221948585

• 1221948585 backwards is 5858491221
• 1221948585 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 1221948585's digits is 45
• More coming soon!