23012564 has 6 divisors (see below), whose sum is σ = 40271994. Its totient is φ = 11506280.

The previous prime is 23012533. The next prime is 23012599. The reversal of 23012564 is 46521032.

It can be written as a sum of positive squares in only one way, i.e., 17156164 + 5856400 = 4142^2 + 2420^2 .

It is a congruent 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 as a sum of consecutive naturals, namely, 2876567 + ... + 2876574.

It is an arithmetic number, because the mean of its divisors is an integer number (6711999).

Almost surely, 2^23012564 is an apocalyptic number.

It is an amenable number.

23012564 is a deficient number, since it is larger than the sum of its proper divisors (17259430).

23012564 is a wasteful number, since it uses less digits than its factorization.

23012564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5753145 (or 5753143 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 23012564 is about 4797.1412320256. The cubic root of 23012564 is about 284.4384716673.

Adding to 23012564 its reverse (46521032), we get a palindrome (69533596).

The spelling of 23012564 in words is "twenty-three million, twelve thousand, five hundred sixty-four".