28544632 has 16 divisors (see below), whose sum is σ = 56669760. Its totient is φ = 13432704.

The previous prime is 28544629. The next prime is 28544657. The reversal of 28544632 is 23644582.

It is a Harshad number since it is a multiple of its sum of digits (34).

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, 104808 + ... + 105079.

It is an arithmetic number, because the mean of its divisors is an integer number (3541860).

Almost surely, 2^28544632 is an apocalyptic number.

It is an amenable number.

28544632 is a deficient number, since it is larger than the sum of its proper divisors (28125128).

28544632 is a wasteful number, since it uses less digits than its factorization.

28544632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209910 (or 209906 counting only the distinct ones).

The product of its digits is 46080, while the sum is 34.

The square root of 28544632 is about 5342.7176605170. The cubic root of 28544632 is about 305.6151055187.

The spelling of 28544632 in words is "twenty-eight million, five hundred forty-four thousand, six hundred thirty-two".