23400428 has 24 divisors (see below), whose sum is σ = 43047312. Its totient is φ = 11116224.

The previous prime is 23400427. The next prime is 23400451. The reversal of 23400428 is 82400432.

It is not an unprimeable number, because it can be changed into a prime (23400427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4526 + ... + 8202.

It is an arithmetic number, because the mean of its divisors is an integer number (1793638).

Almost surely, 2^23400428 is an apocalyptic number.

It is an amenable number.

23400428 is a deficient number, since it is larger than the sum of its proper divisors (19646884).

23400428 is a wasteful number, since it uses less digits than its factorization.

23400428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3761 (or 3759 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 23400428 is about 4837.3988878322. The cubic root of 23400428 is about 286.0275944490.

The spelling of 23400428 in words is "twenty-three million, four hundred thousand, four hundred twenty-eight".