23117256 has 24 divisors (see below), whose sum is σ = 62609430. Its totient is φ = 7705728.

The previous prime is 23117251. The next prime is 23117257. The reversal of 23117256 is 65271132.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 22184100 + 933156 = 4710^2 + 966^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (23117251) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 160465 + ... + 160608.

Almost surely, 2^23117256 is an apocalyptic number.

It is an amenable number.

23117256 is an abundant number, since it is smaller than the sum of its proper divisors (39492174).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23117256 is a wasteful number, since it uses less digits than its factorization.

23117256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321085 (or 321078 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 23117256 is about 4808.0407652182. The cubic root of 23117256 is about 284.8691550808.

Adding to 23117256 its reverse (65271132), we get a palindrome (88388388).

The spelling of 23117256 in words is "twenty-three million, one hundred seventeen thousand, two hundred fifty-six".