73320724 has 12 divisors (see below), whose sum is σ = 128671200. Its totient is φ = 36557528.

The previous prime is 73320721. The next prime is 73320743. The reversal of 73320724 is 42702337.

It is a junction number, because it is equal to n+sod(n) for n = 73320692 and 73320701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73320721) 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, 24094 + ... + 26965.

It is an arithmetic number, because the mean of its divisors is an integer number (10722600).

Almost surely, 2^73320724 is an apocalyptic number.

It is an amenable number.

73320724 is a deficient number, since it is larger than the sum of its proper divisors (55350476).

73320724 is a wasteful number, since it uses less digits than its factorization.

73320724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51422 (or 51420 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 28.

The square root of 73320724 is about 8562.7521276748. The cubic root of 73320724 is about 418.5450868227.

The spelling of 73320724 in words is "seventy-three million, three hundred twenty thousand, seven hundred twenty-four".