73320436 has 12 divisors (see below), whose sum is σ = 146640928. Its totient is φ = 31423032.

The previous prime is 73320433. The next prime is 73320437. The reversal of 73320436 is 63402337.

73320436 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 2618587 = 73320436 / (7 + 3 + 3 + 2 + 0 + 4 + 3 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73320431) 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, 1309266 + ... + 1309321.

Almost surely, 2^73320436 is an apocalyptic number.

It is an amenable number.

73320436 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

73320436 is a wasteful number, since it uses less digits than its factorization.

73320436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2618598 (or 2618596 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 28.

The square root of 73320436 is about 8562.7353106353. The cubic root of 73320436 is about 418.5445388142.

The spelling of 73320436 in words is "seventy-three million, three hundred twenty thousand, four hundred thirty-six".