28856244 has 12 divisors (see below), whose sum is σ = 67331264. Its totient is φ = 9618744.

The previous prime is 28856209. The next prime is 28856273. The reversal of 28856244 is 44265882.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1202332 + ... + 1202355.

Almost surely, 2^28856244 is an apocalyptic number.

It is an amenable number.

28856244 is an abundant number, since it is smaller than the sum of its proper divisors (38475020).

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

28856244 is a wasteful number, since it uses less digits than its factorization.

28856244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2404694 (or 2404692 counting only the distinct ones).

The product of its digits is 122880, while the sum is 39.

The square root of 28856244 is about 5371.8008153691. The cubic root of 28856244 is about 306.7231816658.

The spelling of 28856244 in words is "twenty-eight million, eight hundred fifty-six thousand, two hundred forty-four".