23400172 has 24 divisors (see below), whose sum is σ = 44029440. Its totient is φ = 10846800.

The previous prime is 23400163. The next prime is 23400203. The reversal of 23400172 is 27100432.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 297 + ... + 6847.

It is an arithmetic number, because the mean of its divisors is an integer number (1834560).

Almost surely, 2^23400172 is an apocalyptic number.

It is an amenable number.

23400172 is a deficient number, since it is larger than the sum of its proper divisors (20629268).

23400172 is a wasteful number, since it uses less digits than its factorization.

23400172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6621 (or 6619 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 23400172 is about 4837.3724272584. The cubic root of 23400172 is about 286.0265514007.

The spelling of 23400172 in words is "twenty-three million, four hundred thousand, one hundred seventy-two".