73328399 has 4 divisors (see below), whose sum is σ = 73346136. Its totient is φ = 73310664.

The previous prime is 73328389. The next prime is 73328401. The reversal of 73328399 is 99382337.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 73328399 - 2¹⁶ = 73262863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73328329) 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, 977 + ... + 12149.

It is an arithmetic number, because the mean of its divisors is an integer number (18336534).

Almost surely, 2^73328399 is an apocalyptic number.

73328399 is a deficient number, since it is larger than the sum of its proper divisors (17737).

73328399 is a wasteful number, since it uses less digits than its factorization.

73328399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17736.

The product of its digits is 244944, while the sum is 44.

The square root of 73328399 is about 8563.2002779335. The cubic root of 73328399 is about 418.5596903403.

The spelling of 73328399 in words is "seventy-three million, three hundred twenty-eight thousand, three hundred ninety-nine".