23405475 has 12 divisors (see below), whose sum is σ = 38697176. Its totient is φ = 12482880.

The previous prime is 23405471. The next prime is 23405507. The reversal of 23405475 is 57450432.

It is not a de Polignac number, because 23405475 - 2² = 23405471 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23405471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 155962 + ... + 156111.

Almost surely, 2^23405475 is an apocalyptic number.

23405475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

23405475 is a deficient number, since it is larger than the sum of its proper divisors (15291701).

23405475 is a wasteful number, since it uses less digits than its factorization.

23405475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312086 (or 312081 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 30.

The square root of 23405475 is about 4837.9205243575. The cubic root of 23405475 is about 286.0481564304.

The spelling of 23405475 in words is "twenty-three million, four hundred five thousand, four hundred seventy-five".