73280864 has 24 divisors (see below), whose sum is σ = 144616248. Its totient is φ = 36552960.

The previous prime is 73280861. The next prime is 73280887. The reversal of 73280864 is 46808237.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73280861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12119 + ... + 17129.

It is an arithmetic number, because the mean of its divisors is an integer number (6025677).

Almost surely, 2^73280864 is an apocalyptic number.

It is an amenable number.

73280864 is a deficient number, since it is larger than the sum of its proper divisors (71335384).

73280864 is a wasteful number, since it uses less digits than its factorization.

73280864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5478 (or 5470 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 73280864 is about 8560.4242885502. The cubic root of 73280864 is about 418.4692272731.

The spelling of 73280864 in words is "seventy-three million, two hundred eighty thousand, eight hundred sixty-four".