73564520 has 32 divisors (see below), whose sum is σ = 167857920. Its totient is φ = 29010240.

The previous prime is 73564507. The next prime is 73564549. The reversal of 73564520 is 2546537.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10112 + ... + 15791.

It is an arithmetic number, because the mean of its divisors is an integer number (5245560).

Almost surely, 2^73564520 is an apocalyptic number.

It is an amenable number.

73564520 is an abundant number, since it is smaller than the sum of its proper divisors (94293400).

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

73564520 is a wasteful number, since it uses less digits than its factorization.

73564520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25985 (or 25981 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 32.

The square root of 73564520 is about 8576.9761571314. The cubic root of 73564520 is about 419.0084698193.

The spelling of 73564520 in words is "seventy-three million, five hundred sixty-four thousand, five hundred twenty".