23057856 has 42 divisors (see below), whose sum is σ = 66092832. Its totient is φ = 7685760.

The previous prime is 23057821. The next prime is 23057921. The reversal of 23057856 is 65875032.

23057856 is a `hidden beast` number, since 2 + 30 + 578 + 56 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 23057856.

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, 19440 + ... + 20591.

Almost surely, 2^23057856 is an apocalyptic number.

It is an amenable number.

23057856 is an abundant number, since it is smaller than the sum of its proper divisors (43034976).

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

23057856 is a wasteful number, since it uses less digits than its factorization.

23057856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40049 (or 40036 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 23057856 is about 4801.8596397646. The cubic root of 23057856 is about 284.6249545058.

The spelling of 23057856 in words is "twenty-three million, fifty-seven thousand, eight hundred fifty-six".