72790323 has 4 divisors (see below), whose sum is σ = 97053768. Its totient is φ = 48526880.

The previous prime is 72790313. The next prime is 72790343. The reversal of 72790323 is 32309727.

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 72790323 - 2¹² = 72786227 is a prime.

It is a super-2 number, since 2×72790323² = 10596862244888658, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72790303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12131718 + ... + 12131723.

It is an arithmetic number, because the mean of its divisors is an integer number (24263442).

Almost surely, 2^72790323 is an apocalyptic number.

72790323 is a deficient number, since it is larger than the sum of its proper divisors (24263445).

72790323 is a wasteful number, since it uses less digits than its factorization.

72790323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24263444.

The product of its (nonzero) digits is 15876, while the sum is 33.

The square root of 72790323 is about 8531.7245032877. The cubic root of 72790323 is about 417.5333937696.

The spelling of 72790323 in words is "seventy-two million, seven hundred ninety thousand, three hundred twenty-three".