23133516 has 24 divisors (see below), whose sum is σ = 61689600. Its totient is φ = 6609552.

The previous prime is 23133497. The next prime is 23133563. The reversal of 23133516 is 61533132.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137616 + ... + 137783.

It is an arithmetic number, because the mean of its divisors is an integer number (2570400).

Almost surely, 2^23133516 is an apocalyptic number.

It is an amenable number.

23133516 is an abundant number, since it is smaller than the sum of its proper divisors (38556084).

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

23133516 is a wasteful number, since it uses less digits than its factorization.

23133516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275413 (or 275411 counting only the distinct ones).

The product of its digits is 1620, while the sum is 24.

The square root of 23133516 is about 4809.7313854310. The cubic root of 23133516 is about 284.9359289644.

Adding to 23133516 its reverse (61533132), we get a palindrome (84666648).

The spelling of 23133516 in words is "twenty-three million, one hundred thirty-three thousand, five hundred sixteen".