28038798 has 28 divisors (see below), whose sum is σ = 63061728. Its totient is φ = 9345780.

The previous prime is 28038757. The next prime is 28038809. The reversal of 28038798 is 89783082.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 8158 + ... + 11073.

Almost surely, 2^28038798 is an apocalyptic number.

28038798 is an abundant number, since it is smaller than the sum of its proper divisors (35022930).

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

28038798 is an equidigital number, since it uses as much as digits as its factorization.

28038798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19251 (or 19236 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 28038798 is about 5295.1674194495. The cubic root of 28038798 is about 303.7990867172.

The spelling of 28038798 in words is "twenty-eight million, thirty-eight thousand, seven hundred ninety-eight".