23400475 has 12 divisors (see below), whose sum is σ = 33162064. Its totient is φ = 16045920.

The previous prime is 23400473. The next prime is 23400493. The reversal of 23400475 is 57400432.

It is not a de Polignac number, because 23400475 - 2¹ = 23400473 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23400473) 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, 66684 + ... + 67033.

Almost surely, 2^23400475 is an apocalyptic number.

23400475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

23400475 is a deficient number, since it is larger than the sum of its proper divisors (9761589).

23400475 is a wasteful number, since it uses less digits than its factorization.

23400475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133734 (or 133729 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 23400475 is about 4837.4037458124. The cubic root of 23400475 is about 286.0277859453.

The spelling of 23400475 in words is "twenty-three million, four hundred thousand, four hundred seventy-five".