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13240868 = 224180737
BaseRepresentation
bin110010100000…
…101000100100
3220220201001112
4302200220210
511342201433
61151444152
7220355054
oct62405044
926821045
1013240868
117524073
124526658
132987a44
141a89564
151268348
hexca0a24

13240868 has 12 divisors (see below), whose sum is σ = 23736972. Its totient is φ = 6458880.

The previous prime is 13240859. The next prime is 13240873. The reversal of 13240868 is 86804231.

It can be written as a sum of positive squares in 2 ways, for example, as 7661824 + 5579044 = 2768^2 + 2362^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40205 + ... + 40532.

It is an arithmetic number, because the mean of its divisors is an integer number (1978081).

Almost surely, 213240868 is an apocalyptic number.

It is an amenable number.

13240868 is a deficient number, since it is larger than the sum of its proper divisors (10496104).

13240868 is a wasteful number, since it uses less digits than its factorization.

13240868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80782 (or 80780 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 13240868 is about 3638.8003517643. The cubic root of 13240868 is about 236.5767994005.

The spelling of 13240868 in words is "thirteen million, two hundred forty thousand, eight hundred sixty-eight".

Divisors: 1 2 4 41 82 164 80737 161474 322948 3310217 6620434 13240868