72957023 has 4 divisors (see below), whose sum is σ = 73017240. Its totient is φ = 72896808.

The previous prime is 72956993. The next prime is 72957029. The reversal of 72957023 is 32075927.

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 72957023 - 2¹⁰ = 72955999 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 (72957029) 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, 28253 + ... + 30726.

It is an arithmetic number, because the mean of its divisors is an integer number (18254310).

Almost surely, 2^72957023 is an apocalyptic number.

72957023 is a deficient number, since it is larger than the sum of its proper divisors (60217).

72957023 is a wasteful number, since it uses less digits than its factorization.

72957023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60216.

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 72957023 is about 8541.4883363498. The cubic root of 72957023 is about 417.8518873458.

The spelling of 72957023 in words is "seventy-two million, nine hundred fifty-seven thousand, twenty-three".