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808332018 = 231371227643
BaseRepresentation
bin110000001011100…
…010101011110010
32002100000112001220
4300023202223302
53123413111033
6212113205510
726013465054
oct6013425362
92070015056
10808332018
1138531189a
121a6860896
13cb60c490
14794d78d4
154ae70bb3
hex302e2af2

808332018 has 64 divisors (see below), whose sum is σ = 1776079872. Its totient is φ = 243754560.

The previous prime is 808332001. The next prime is 808332023. The reversal of 808332018 is 810233808.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 808332018.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1256805 + ... + 1257447.

It is an arithmetic number, because the mean of its divisors is an integer number (27751248).

Almost surely, 2808332018 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 808332018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (888039936).

808332018 is an abundant number, since it is smaller than the sum of its proper divisors (967747854).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

808332018 is a wasteful number, since it uses less digits than its factorization.

808332018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 959.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 808332018 is about 28431.1803835156. The cubic root of 808332018 is about 931.5294592542.

The spelling of 808332018 in words is "eight hundred eight million, three hundred thirty-two thousand, eighteen".

Divisors: 1 2 3 6 13 26 39 71 78 142 213 227 426 454 643 681 923 1286 1362 1846 1929 2769 2951 3858 5538 5902 8359 8853 16117 16718 17706 25077 32234 45653 48351 50154 91306 96702 136959 145961 209521 273918 291922 419042 437883 593489 628563 875766 1186978 1257126 1780467 1897493 3560934 3794986 5692479 10363231 11384958 20726462 31089693 62179386 134722003 269444006 404166009 808332018