28864198 has 32 divisors (see below), whose sum is σ = 50761728. Its totient is φ = 12163200.

The previous prime is 28864177. The next prime is 28864201. The reversal of 28864198 is 89146882.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26011 + ... + 27097.

It is an arithmetic number, because the mean of its divisors is an integer number (1586304).

Almost surely, 2^28864198 is an apocalyptic number.

28864198 is a deficient number, since it is larger than the sum of its proper divisors (21897530).

28864198 is a wasteful number, since it uses less digits than its factorization.

28864198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1188.

The product of its digits is 221184, while the sum is 46.

The square root of 28864198 is about 5372.5411119879. The cubic root of 28864198 is about 306.7513610327.

The spelling of 28864198 in words is "twenty-eight million, eight hundred sixty-four thousand, one hundred ninety-eight".