23180812 has 24 divisors (see below), whose sum is σ = 41518400. Its totient is φ = 11321856.

The previous prime is 23180791. The next prime is 23180819. The reversal of 23180812 is 21808132.

It is not an unprimeable number, because it can be changed into a prime (23180819) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 34108 + ... + 34780.

Almost surely, 2^23180812 is an apocalyptic number.

It is an amenable number.

23180812 is a deficient number, since it is larger than the sum of its proper divisors (18337588).

23180812 is a wasteful number, since it uses less digits than its factorization.

23180812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865 (or 863 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 23180812 is about 4814.6455736638. The cubic root of 23180812 is about 285.1299786726.

Adding to 23180812 its reverse (21808132), we get a palindrome (44988944).

The spelling of 23180812 in words is "twenty-three million, one hundred eighty thousand, eight hundred twelve".