28338872 has 16 divisors (see below), whose sum is σ = 54432000. Its totient is φ = 13823680.

The previous prime is 28338859. The next prime is 28338889. The reversal of 28338872 is 27883382.

It is a Harshad number since it is a multiple of its sum of digits (41).

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, 42872 + ... + 43527.

It is an arithmetic number, because the mean of its divisors is an integer number (3402000).

Almost surely, 2^28338872 is an apocalyptic number.

It is an amenable number.

28338872 is a deficient number, since it is larger than the sum of its proper divisors (26093128).

28338872 is a wasteful number, since it uses less digits than its factorization.

28338872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86446 (or 86442 counting only the distinct ones).

The product of its digits is 129024, while the sum is 41.

The square root of 28338872 is about 5323.4267159415. The cubic root of 28338872 is about 304.8790060256.

The spelling of 28338872 in words is "twenty-eight million, three hundred thirty-eight thousand, eight hundred seventy-two".