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12680652 = 2231056721
BaseRepresentation
bin110000010111…
…110111001100
3212212020120210
4300113313030
511221240102
61131442420
7212532555
oct60276714
925766523
1012680652
117181186
1242b6410
13281ca5a
14198132c
1511a736c
hexc17dcc

12680652 has 12 divisors (see below), whose sum is σ = 29588216. Its totient is φ = 4226880.

The previous prime is 12680641. The next prime is 12680653. The reversal of 12680652 is 25608621.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (12680653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 528349 + ... + 528372.

Almost surely, 212680652 is an apocalyptic number.

12680652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12680652 is an abundant number, since it is smaller than the sum of its proper divisors (16907564).

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

12680652 is a wasteful number, since it uses less digits than its factorization.

12680652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056728 (or 1056726 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 12680652 is about 3560.9903116970. The cubic root of 12680652 is about 233.1921150024.

The spelling of 12680652 in words is "twelve million, six hundred eighty thousand, six hundred fifty-two".

Divisors: 1 2 3 4 6 12 1056721 2113442 3170163 4226884 6340326 12680652