23015512 has 16 divisors (see below), whose sum is σ = 46473840. Its totient is φ = 10622496.

The previous prime is 23015497. The next prime is 23015519. The reversal of 23015512 is 21551032.

It is a self number, because there is not a number n which added to its sum of digits gives 23015512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23015519) 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, 110548 + ... + 110755.

It is an arithmetic number, because the mean of its divisors is an integer number (2904615).

Almost surely, 2^23015512 is an apocalyptic number.

It is an amenable number.

23015512 is an abundant number, since it is smaller than the sum of its proper divisors (23458328).

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

23015512 is a wasteful number, since it uses less digits than its factorization.

23015512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221322 (or 221318 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 23015512 is about 4797.4484885197. The cubic root of 23015512 is about 284.4506170445.

Adding to 23015512 its reverse (21551032), we get a palindrome (44566544).

The spelling of 23015512 in words is "twenty-three million, fifteen thousand, five hundred twelve".