28344128 has 28 divisors (see below), whose sum is σ = 56522112. Its totient is φ = 14102400.

The previous prime is 28344103. The next prime is 28344133. The reversal of 28344128 is 82144382.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 28344094 and 28344103.

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, 13553 + ... + 15503.

Almost surely, 2^28344128 is an apocalyptic number.

It is an amenable number.

28344128 is a deficient number, since it is larger than the sum of its proper divisors (28177984).

28344128 is a wasteful number, since it uses less digits than its factorization.

28344128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2190 (or 2180 counting only the distinct ones).

The product of its digits is 12288, while the sum is 32.

The square root of 28344128 is about 5323.9203600355. The cubic root of 28344128 is about 304.8978534589.

The spelling of 28344128 in words is "twenty-eight million, three hundred forty-four thousand, one hundred twenty-eight".