23156465 has 16 divisors (see below), whose sum is σ = 29762640. Its totient is φ = 17233920.

The previous prime is 23156449. The next prime is 23156501. The reversal of 23156465 is 56465132.

It can be written as a sum of positive squares in 8 ways, for example, as 868624 + 22287841 = 932^2 + 4721^2 .

It is not a de Polignac number, because 23156465 - 2⁴ = 23156449 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 6035 + ... + 9095.

It is an arithmetic number, because the mean of its divisors is an integer number (1860165).

Almost surely, 2^23156465 is an apocalyptic number.

It is an amenable number.

23156465 is a deficient number, since it is larger than the sum of its proper divisors (6606175).

23156465 is a wasteful number, since it uses less digits than its factorization.

23156465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3172.

The product of its digits is 21600, while the sum is 32.

The square root of 23156465 is about 4812.1164782245. The cubic root of 23156465 is about 285.0301189058.

The spelling of 23156465 in words is "twenty-three million, one hundred fifty-six thousand, four hundred sixty-five".