28244656 has 20 divisors (see below), whose sum is σ = 59699304. Its totient is φ = 12838400.

The previous prime is 28244641. The next prime is 28244669. The reversal of 28244656 is 65644282.

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, 80065 + ... + 80416.

Almost surely, 2^28244656 is an apocalyptic number.

It is an amenable number.

28244656 is an abundant number, since it is smaller than the sum of its proper divisors (31454648).

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

28244656 is a wasteful number, since it uses less digits than its factorization.

28244656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160500 (or 160494 counting only the distinct ones).

The product of its digits is 92160, while the sum is 37.

The square root of 28244656 is about 5314.5701613583. The cubic root of 28244656 is about 304.5407618872.

It can be divided in two parts, 28244 and 656, that added together give a square (28900 = 170²).

The spelling of 28244656 in words is "twenty-eight million, two hundred forty-four thousand, six hundred fifty-six".