23400928 has 24 divisors (see below), whose sum is σ = 46410840. Its totient is φ = 11614080.

The previous prime is 23400907. The next prime is 23400929. The reversal of 23400928 is 82900432.

It is a super-2 number, since 2×23400928² = 1095206862522368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23400896 and 23400905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23400929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1818 + ... + 7078.

It is an arithmetic number, because the mean of its divisors is an integer number (1933785).

Almost surely, 2^23400928 is an apocalyptic number.

It is an amenable number.

23400928 is a deficient number, since it is larger than the sum of its proper divisors (23009912).

23400928 is a wasteful number, since it uses less digits than its factorization.

23400928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5410 (or 5402 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 23400928 is about 4837.4505682229. The cubic root of 23400928 is about 286.0296316308.

The spelling of 23400928 in words is "twenty-three million, four hundred thousand, nine hundred twenty-eight".