28451742

Names of 28451742

• Cardinal: 28451742 can be written as Twenty-eight million, four hundred fifty-one thousand, seven hundred forty-two.

Scientific notation

• Scientific notation: 2.8451742 × 10⁷

Factors of 28451742

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 305

Divisors of 28451742

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 6 11 22 33 37 61 66 74 111 122 183 191 222 366 382 407 573 671 814 1146 1221 1342 2013 2101 2257 2442 4026 4202 4514 6303 6771 7067 11651 12606 13542 14134 21201 23302 24827 34953 42402 49654 69906 74481 77737 128161 148962 155474 233211 256322 384483 431087 466422 768966 862174 1293261 2586522 4741957 9483914 14225871 28451742
• Sum of all divisors σ(n): 65138688
• Sum of proper divisors (its aliquot sum) s(n): 36686946
• 28451742 is an abundant number, because the sum of its proper divisors (36686946) is greater than itself. Its abundance is 8235204

Bases of 28451742

• Binary: 1101100100010001110011110₂
• Hexadecimal: 0x1B2239E
• Base-36: GXTI6

Squares and roots of 28451742

• 28451742 squared (28451742²) is 809501622834564
• 28451742 cubed (28451742³) is 23031731321470323610488
• The square root of 28451742 is 5334.0174352921
• The cube root of 28451742 is 305.2832341649

Scales and comparisons

• 28,451,742 seconds is equal to 47 weeks, 7 hours, 15 minutes, 42 seconds.
• To count from 1 to 28,451,742 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 28451742 cubic inches would be around 25.4 feet tall.

Recreational maths with 28451742

• 28451742 backwards is 24715482
• 28451742 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 28451742's digits is 33
• More coming soon!