72904323 has 16 divisors (see below), whose sum is σ = 99015840. Its totient is φ = 47706624.

The previous prime is 72904301. The next prime is 72904331. The reversal of 72904323 is 32340927.

It is not a de Polignac number, because 72904323 - 2⁶ = 72904259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72904423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35965 + ... + 37937.

It is an arithmetic number, because the mean of its divisors is an integer number (6188490).

Almost surely, 2^72904323 is an apocalyptic number.

72904323 is a deficient number, since it is larger than the sum of its proper divisors (26111517).

72904323 is a wasteful number, since it uses less digits than its factorization.

72904323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2198.

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 72904323 is about 8538.4028365965. The cubic root of 72904323 is about 417.7512523058.

The spelling of 72904323 in words is "seventy-two million, nine hundred four thousand, three hundred twenty-three".