28159344 has 60 divisors (see below), whose sum is σ = 83450016. Its totient is φ = 8833536.

The previous prime is 28159301. The next prime is 28159379. The reversal of 28159344 is 44395182.

28159344 is a `hidden beast` number, since 28 + 1 + 593 + 44 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 28159299 and 28159308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3304 + ... + 8199.

Almost surely, 2^28159344 is an apocalyptic number.

28159344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28159344 is an abundant number, since it is smaller than the sum of its proper divisors (55290672).

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

28159344 is a wasteful number, since it uses less digits than its factorization.

28159344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11534 (or 11525 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 28159344 is about 5306.5378543830. The cubic root of 28159344 is about 304.2338344024.

The spelling of 28159344 in words is "twenty-eight million, one hundred fifty-nine thousand, three hundred forty-four".