28873956 has 24 divisors (see below), whose sum is σ = 71336160. Its totient is φ = 9058432.

The previous prime is 28873931. The next prime is 28873967. The reversal of 28873956 is 65937882.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70566 + ... + 70973.

It is an arithmetic number, because the mean of its divisors is an integer number (2972340).

Almost surely, 2^28873956 is an apocalyptic number.

It is an amenable number.

28873956 is an abundant number, since it is smaller than the sum of its proper divisors (42462204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28873956 is a wasteful number, since it uses less digits than its factorization.

28873956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141563 (or 141561 counting only the distinct ones).

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

The square root of 28873956 is about 5373.4491716215. The cubic root of 28873956 is about 306.7859245259.

The spelling of 28873956 in words is "twenty-eight million, eight hundred seventy-three thousand, nine hundred fifty-six".