13420656 has 30 divisors (see below), whose sum is σ = 37559600. Its totient is φ = 4473504.

The previous prime is 13420643. The next prime is 13420663. The reversal of 13420656 is 65602431.

13420656 is a `hidden beast` number, since 1 + 3 + 4 + 2 + 0 + 656 = 666.

It is a super-2 number, since 2×13420656² = 360228014940672, which contains 22 as substring.

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46456 + ... + 46743.

Almost surely, 2^13420656 is an apocalyptic number.

13420656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13420656 is an abundant number, since it is smaller than the sum of its proper divisors (24138944).

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

13420656 is a wasteful number, since it uses less digits than its factorization.

13420656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93213 (or 93204 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 13420656 is about 3663.4213516875. The cubic root of 13420656 is about 237.6427566492.

The spelling of 13420656 in words is "thirteen million, four hundred twenty thousand, six hundred fifty-six".