23405164 has 12 divisors (see below), whose sum is σ = 42066304. Its totient is φ = 11386224.

The previous prime is 23405153. The next prime is 23405183. The reversal of 23405164 is 46150432.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78924 + ... + 79219.

Almost surely, 2^23405164 is an apocalyptic number.

It is an amenable number.

23405164 is a deficient number, since it is larger than the sum of its proper divisors (18661140).

23405164 is a wasteful number, since it uses less digits than its factorization.

23405164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158184 (or 158182 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 23405164 is about 4837.8883823420. Note that the first 3 decimals coincide. The cubic root of 23405164 is about 286.0468894709.

Adding to 23405164 its reverse (46150432), we get a palindrome (69555596).

The spelling of 23405164 in words is "twenty-three million, four hundred five thousand, one hundred sixty-four".