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68495812 = 22711222389
BaseRepresentation
bin1000001010100…
…10100111000100
311202212221120221
410011102213010
5120013331222
610444034124
71461130150
oct405224704
9152787527
1068495812
1135733a10
121ab32944
1311262c88
149150060
1560300c7
hex41529c4

68495812 has 24 divisors (see below), whose sum is σ = 149446080. Its totient is φ = 26686560.

The previous prime is 68495809. The next prime is 68495831. The reversal of 68495812 is 21859486.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110887 + ... + 111502.

It is an arithmetic number, because the mean of its divisors is an integer number (6226920).

Almost surely, 268495812 is an apocalyptic number.

It is an amenable number.

68495812 is an abundant number, since it is smaller than the sum of its proper divisors (80950268).

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

68495812 is a wasteful number, since it uses less digits than its factorization.

68495812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222411 (or 222409 counting only the distinct ones).

The product of its digits is 138240, while the sum is 43.

The square root of 68495812 is about 8276.2196684235. The cubic root of 68495812 is about 409.1551351044.

The spelling of 68495812 in words is "sixty-eight million, four hundred ninety-five thousand, eight hundred twelve".

Divisors: 1 2 4 7 11 14 22 28 44 77 154 308 222389 444778 889556 1556723 2446279 3113446 4892558 6226892 9785116 17123953 34247906 68495812