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12745056 = 253132761
BaseRepresentation
bin110000100111…
…100101100000
3212222111221010
4300213211200
511230320211
61133100520
7213221412
oct60474540
925874833
1012745056
117215605
124327740
13284316c
14199a9b2
1511bb4a6
hexc27960

12745056 has 24 divisors (see below), whose sum is σ = 33456024. Its totient is φ = 4248320.

The previous prime is 12745039. The next prime is 12745063. The reversal of 12745056 is 65054721.

It is a tau number, because it is divible by the number of its divisors (24).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

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, 66285 + ... + 66476.

It is an arithmetic number, because the mean of its divisors is an integer number (1394001).

Almost surely, 212745056 is an apocalyptic number.

12745056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12745056 is an abundant number, since it is smaller than the sum of its proper divisors (20710968).

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

12745056 is a wasteful number, since it uses less digits than its factorization.

12745056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132774 (or 132766 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 12745056 is about 3570.0218486726. The cubic root of 12745056 is about 233.5862364443.

Adding to 12745056 its reverse (65054721), we get a palindrome (77799777).

The spelling of 12745056 in words is "twelve million, seven hundred forty-five thousand, fifty-six".

Divisors: 1 2 3 4 6 8 12 16 24 32 48 96 132761 265522 398283 531044 796566 1062088 1593132 2124176 3186264 4248352 6372528 12745056