23656420 has 24 divisors (see below), whose sum is σ = 51839424. Its totient is φ = 9050976.

The previous prime is 23656363. The next prime is 23656447. The reversal of 23656420 is 2465632.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25254 + ... + 26173.

It is an arithmetic number, because the mean of its divisors is an integer number (2159976).

Almost surely, 2^23656420 is an apocalyptic number.

23656420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23656420 is an abundant number, since it is smaller than the sum of its proper divisors (28183004).

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

23656420 is a wasteful number, since it uses less digits than its factorization.

23656420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51459 (or 51457 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 23656420 is about 4863.7865907130. The cubic root of 23656420 is about 287.0668259286.

The spelling of 23656420 in words is "twenty-three million, six hundred fifty-six thousand, four hundred twenty".