12656090 has 32 divisors (see below), whose sum is σ = 24408000. Its totient is φ = 4710528.

The previous prime is 12656087. The next prime is 12656101. The reversal of 12656090 is 9065621.

12656090 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12656090² = 320353228176200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10646 + ... + 11774.

It is an arithmetic number, because the mean of its divisors is an integer number (762750).

Almost surely, 2^12656090 is an apocalyptic number.

12656090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12656090 is a deficient number, since it is larger than the sum of its proper divisors (11751910).

12656090 is a wasteful number, since it uses less digits than its factorization.

12656090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 12656090 is about 3557.5398803105. The cubic root of 12656090 is about 233.0414559035.

The spelling of 12656090 in words is "twelve million, six hundred fifty-six thousand, ninety".