23490564 has 12 divisors (see below), whose sum is σ = 54811344. Its totient is φ = 7830184.

The previous prime is 23490547. The next prime is 23490611. The reversal of 23490564 is 46509432.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 978762 + ... + 978785.

It is an arithmetic number, because the mean of its divisors is an integer number (4567612).

Almost surely, 2^23490564 is an apocalyptic number.

It is an amenable number.

23490564 is an abundant number, since it is smaller than the sum of its proper divisors (31320780).

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

23490564 is a wasteful number, since it uses less digits than its factorization.

23490564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1957554 (or 1957552 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 23490564 is about 4846.7065106111. The cubic root of 23490564 is about 286.3943733745.

Adding to 23490564 its reverse (46509432), we get a palindrome (69999996).

The spelling of 23490564 in words is "twenty-three million, four hundred ninety thousand, five hundred sixty-four".