72790823 has 12 divisors (see below), whose sum is σ = 84883032. Its totient is φ = 62238960.

The previous prime is 72790819. The next prime is 72790829. The reversal of 72790823 is 32809727.

It is not a de Polignac number, because 72790823 - 2² = 72790819 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 (72790829) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21293 + ... + 24473.

It is an arithmetic number, because the mean of its divisors is an integer number (7073586).

Almost surely, 2^72790823 is an apocalyptic number.

72790823 is a deficient number, since it is larger than the sum of its proper divisors (12092209).

72790823 is a wasteful number, since it uses less digits than its factorization.

72790823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3662 (or 3655 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 72790823 is about 8531.7538056369. The cubic root of 72790823 is about 417.5343497859.

The spelling of 72790823 in words is "seventy-two million, seven hundred ninety thousand, eight hundred twenty-three".