28039198 has 8 divisors (see below), whose sum is σ = 45882360. Its totient is φ = 12745080.

The previous prime is 28039181. The next prime is 28039211. The reversal of 28039198 is 89193082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 28039198.

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, 637233 + ... + 637276.

It is an arithmetic number, because the mean of its divisors is an integer number (5735295).

Almost surely, 2^28039198 is an apocalyptic number.

28039198 is a deficient number, since it is larger than the sum of its proper divisors (17843162).

28039198 is a wasteful number, since it uses less digits than its factorization.

28039198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1274522.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 28039198 is about 5295.2051896031. The cubic root of 28039198 is about 303.8005313709.

The spelling of 28039198 in words is "twenty-eight million, thirty-nine thousand, one hundred ninety-eight".