72490923 has 16 divisors (see below), whose sum is σ = 111098400. Its totient is φ = 46660320.

The previous prime is 72490919. The next prime is 72490933. The reversal of 72490923 is 32909427.

It is not a de Polignac number, because 72490923 - 2² = 72490919 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72490903) 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, 45508 + ... + 47073.

It is an arithmetic number, because the mean of its divisors is an integer number (6943650).

Almost surely, 2^72490923 is an apocalyptic number.

72490923 is a deficient number, since it is larger than the sum of its proper divisors (38607477).

72490923 is a wasteful number, since it uses less digits than its factorization.

72490923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92619 (or 92613 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 72490923 is about 8514.1601464854. The cubic root of 72490923 is about 416.9601431809.

The spelling of 72490923 in words is "seventy-two million, four hundred ninety thousand, nine hundred twenty-three".