28873556 has 24 divisors (see below), whose sum is σ = 53088000. Its totient is φ = 13714272.

The previous prime is 28873549. The next prime is 28873561. The reversal of 28873556 is 65537882.

It is a congruent number.

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, 13445 + ... + 15443.

It is an arithmetic number, because the mean of its divisors is an integer number (2212000).

Almost surely, 2^28873556 is an apocalyptic number.

It is an amenable number.

28873556 is a deficient number, since it is larger than the sum of its proper divisors (24214444).

28873556 is a wasteful number, since it uses less digits than its factorization.

28873556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2183 (or 2181 counting only the distinct ones).

The product of its digits is 403200, while the sum is 44.

The square root of 28873556 is about 5373.4119514513. The cubic root of 28873556 is about 306.7845078521.

The spelling of 28873556 in words is "twenty-eight million, eight hundred seventy-three thousand, five hundred fifty-six".