23130816 has 28 divisors (see below), whose sum is σ = 61200792. Its totient is φ = 7710208.

The previous prime is 23130803. The next prime is 23130817. The reversal of 23130816 is 61803132.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (23130817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60045 + ... + 60428.

Almost surely, 2^23130816 is an apocalyptic number.

It is an amenable number.

23130816 is an abundant number, since it is smaller than the sum of its proper divisors (38069976).

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

23130816 is a wasteful number, since it uses less digits than its factorization.

23130816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120488 (or 120478 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 23130816 is about 4809.4506962854. The cubic root of 23130816 is about 284.9248432171.

Adding to 23130816 its reverse (61803132), we get a palindrome (84933948).

The spelling of 23130816 in words is "twenty-three million, one hundred thirty thousand, eight hundred sixteen".