72873023 has 4 divisors (see below), whose sum is σ = 72960720. Its totient is φ = 72785328.

The previous prime is 72873011. The next prime is 72873041. The reversal of 72873023 is 32037827.

It is a happy number.

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 72873023 - 2¹⁰ = 72871999 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 (72873043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42590 + ... + 44267.

It is an arithmetic number, because the mean of its divisors is an integer number (18240180).

Almost surely, 2^72873023 is an apocalyptic number.

72873023 is a deficient number, since it is larger than the sum of its proper divisors (87697).

72873023 is an equidigital number, since it uses as much as digits as its factorization.

72873023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87696.

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 72873023 is about 8536.5697443411. The cubic root of 72873023 is about 417.6914593911.

The spelling of 72873023 in words is "seventy-two million, eight hundred seventy-three thousand, twenty-three".