72790307 has 4 divisors (see below), whose sum is σ = 72820176. Its totient is φ = 72760440.

The previous prime is 72790303. The next prime is 72790313. The reversal of 72790307 is 70309727.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70309727 = 491 ⋅143197.

It is a cyclic number.

It is not a de Polignac number, because 72790307 - 2² = 72790303 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72790301) 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, 10919 + ... + 16272.

It is an arithmetic number, because the mean of its divisors is an integer number (18205044).

Almost surely, 2^72790307 is an apocalyptic number.

72790307 is a deficient number, since it is larger than the sum of its proper divisors (29869).

72790307 is a wasteful number, since it uses less digits than its factorization.

72790307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29868.

The product of its (nonzero) digits is 18522, while the sum is 35.

The square root of 72790307 is about 8531.7235656109. The cubic root of 72790307 is about 417.5333631770.

The spelling of 72790307 in words is "seventy-two million, seven hundred ninety thousand, three hundred seven".