28293440

Names of 28293440

• Cardinal: 28293440 can be written as Twenty-eight million, two hundred ninety-three thousand, four hundred forty.

Scientific notation

• Scientific notation: 2.829344 × 10⁷

Factors of 28293440

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 774

Divisors of 28293440

• Number of divisors d(n): 112
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 17 20 28 32 34 35 40 56 64 68 70 80 85 112 119 136 140 160 170 224 238 272 280 320 340 448 476 544 560 595 680 743 952 1088 1120 1190 1360 1486 1904 2240 2380 2720 2972 3715 3808 4760 5201 5440 5944 7430 7616 9520 10402 11888 12631 14860 19040 20804 23776 25262 26005 29720 38080 41608 47552 50524 52010 59440 63155 83216 88417 101048 104020 118880 126310 166432 176834 202096 208040 237760 252620 332864 353668 404192 416080 442085 505240 707336 808384 832160 884170 1010480 1414672 1664320 1768340 2020960 2829344 3536680 4041920 5658688 7073360 14146720 28293440
• Sum of all divisors σ(n): 81637632
• Sum of proper divisors (its aliquot sum) s(n): 53344192
• 28293440 is an abundant number, because the sum of its proper divisors (53344192) is greater than itself. Its abundance is 25050752

Bases of 28293440

• Binary: 1101011111011100101000000₂
• Hexadecimal: 0x1AFB940
• Base-36: GUFCW

Squares and roots of 28293440

• 28293440 squared (28293440²) is 800518747033600
• 28293440 cubed (28293440³) is 22649429138070339584000
• The square root of 28293440 is 5319.1578280777
• The cube root of 28293440 is 304.7159946965

Scales and comparisons

• 28,293,440 seconds is equal to 46 weeks, 5 days, 11 hours, 17 minutes, 20 seconds.
• To count from 1 to 28,293,440 would take you about eighteen weeks!

  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 28293440 cubic inches would be around 25.4 feet tall.

Recreational maths with 28293440

• 28293440 backwards is 04439282
• 28293440 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 28293440's digits is 32
• More coming soon!