72632923 has 4 divisors (see below), whose sum is σ = 79235928. Its totient is φ = 66029920.

The previous prime is 72632899. The next prime is 72632933. The reversal of 72632923 is 32923627.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32923627 = 11 ⋅2993057.

It is not a de Polignac number, because 72632923 - 2¹⁷ = 72501851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72632933) 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, 3301486 + ... + 3301507.

It is an arithmetic number, because the mean of its divisors is an integer number (19808982).

Almost surely, 2^72632923 is an apocalyptic number.

72632923 is a deficient number, since it is larger than the sum of its proper divisors (6603005).

72632923 is a wasteful number, since it uses less digits than its factorization.

72632923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6603004.

The product of its digits is 27216, while the sum is 34.

The square root of 72632923 is about 8522.4951158684. The cubic root of 72632923 is about 417.2322219438.

The spelling of 72632923 in words is "seventy-two million, six hundred thirty-two thousand, nine hundred twenty-three".