23130156 has 72 divisors (see below), whose sum is σ = 63456960. Its totient is φ = 6537888.

The previous prime is 23130137. The next prime is 23130169. The reversal of 23130156 is 65103132.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81591 + ... + 81873.

Almost surely, 2^23130156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23130156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31728480).

23130156 is an abundant number, since it is smaller than the sum of its proper divisors (40326804).

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

23130156 is a wasteful number, since it uses less digits than its factorization.

23130156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443 (or 434 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 23130156 is about 4809.3820808915. The cubic root of 23130156 is about 284.9221332365.

Adding to 23130156 its reverse (65103132), we get a palindrome (88233288).

The spelling of 23130156 in words is "twenty-three million, one hundred thirty thousand, one hundred fifty-six".