28927198 has 4 divisors (see below), whose sum is σ = 43390800. Its totient is φ = 14463598.

The previous prime is 28927189. The next prime is 28927211. The reversal of 28927198 is 89172982.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89172982 = 2 ⋅44586491.

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, 7231798 + ... + 7231801.

It is an arithmetic number, because the mean of its divisors is an integer number (10847700).

Almost surely, 2^28927198 is an apocalyptic number.

28927198 is a deficient number, since it is larger than the sum of its proper divisors (14463602).

28927198 is a wasteful number, since it uses less digits than its factorization.

28927198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14463601.

The product of its digits is 145152, while the sum is 46.

The square root of 28927198 is about 5378.4010635132. The cubic root of 28927198 is about 306.9743742470.

The spelling of 28927198 in words is "twenty-eight million, nine hundred twenty-seven thousand, one hundred ninety-eight".