28086944 has 24 divisors (see below), whose sum is σ = 55429920. Its totient is φ = 14009536.

The previous prime is 28086943. The next prime is 28086953. The reversal of 28086944 is 44968082.

It is not an unprimeable number, because it can be changed into a prime (28086943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17237 + ... + 18795.

It is an arithmetic number, because the mean of its divisors is an integer number (2309580).

Almost surely, 2^28086944 is an apocalyptic number.

It is an amenable number.

28086944 is a deficient number, since it is larger than the sum of its proper divisors (27342976).

28086944 is a wasteful number, since it uses less digits than its factorization.

28086944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2132 (or 2124 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 41.

The square root of 28086944 is about 5299.7116902715. The cubic root of 28086944 is about 303.9728738492.

The spelling of 28086944 in words is "twenty-eight million, eighty-six thousand, nine hundred forty-four".