28956873 has 24 divisors (see below), whose sum is σ = 42743008. Its totient is φ = 17424000.

The previous prime is 28956871. The next prime is 28956887. The reversal of 28956873 is 37865982.

It is not a de Polignac number, because 28956873 - 2¹ = 28956871 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28956871) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87318 + ... + 87648.

Almost surely, 2^28956873 is an apocalyptic number.

It is an amenable number.

28956873 is a deficient number, since it is larger than the sum of its proper divisors (13786135).

28956873 is a wasteful number, since it uses less digits than its factorization.

28956873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597 (or 586 counting only the distinct ones).

The product of its digits is 725760, while the sum is 48.

The square root of 28956873 is about 5381.1590758869. The cubic root of 28956873 is about 307.0793083802.

The spelling of 28956873 in words is "twenty-eight million, nine hundred fifty-six thousand, eight hundred seventy-three".