28498172 has 6 divisors (see below), whose sum is σ = 49871808. Its totient is φ = 14249084.

The previous prime is 28498139. The next prime is 28498181. The reversal of 28498172 is 27189482.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3562268 + ... + 3562275.

It is an arithmetic number, because the mean of its divisors is an integer number (8311968).

Almost surely, 2^28498172 is an apocalyptic number.

It is an amenable number.

28498172 is a deficient number, since it is larger than the sum of its proper divisors (21373636).

28498172 is a wasteful number, since it uses less digits than its factorization.

28498172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7124547 (or 7124545 counting only the distinct ones).

The product of its digits is 64512, while the sum is 41.

The square root of 28498172 is about 5338.3679153839. The cubic root of 28498172 is about 305.4492063955.

The spelling of 28498172 in words is "twenty-eight million, four hundred ninety-eight thousand, one hundred seventy-two".