73440564 has 24 divisors (see below), whose sum is σ = 178812480. Its totient is φ = 23415744.

The previous prime is 73440559. The next prime is 73440593. The reversal of 73440564 is 46504437.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132769 + ... + 133320.

It is an arithmetic number, because the mean of its divisors is an integer number (7450520).

Almost surely, 2^73440564 is an apocalyptic number.

It is an amenable number.

73440564 is an abundant number, since it is smaller than the sum of its proper divisors (105371916).

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

73440564 is a wasteful number, since it uses less digits than its factorization.

73440564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266119 (or 266117 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 33.

The square root of 73440564 is about 8569.7470207702. The cubic root of 73440564 is about 418.7729948314.

The spelling of 73440564 in words is "seventy-three million, four hundred forty thousand, five hundred sixty-four".