28198396 has 6 divisors (see below), whose sum is σ = 49347200. Its totient is φ = 14099196.

The previous prime is 28198381. The next prime is 28198421. The reversal of 28198396 is 69389182.

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, 3524796 + ... + 3524803.

Almost surely, 2^28198396 is an apocalyptic number.

It is an amenable number.

28198396 is a deficient number, since it is larger than the sum of its proper divisors (21148804).

28198396 is a wasteful number, since it uses less digits than its factorization.

28198396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7049603 (or 7049601 counting only the distinct ones).

The product of its digits is 186624, while the sum is 46.

The square root of 28198396 is about 5310.2161914559. The cubic root of 28198396 is about 304.3744088381.

The spelling of 28198396 in words is "twenty-eight million, one hundred ninety-eight thousand, three hundred ninety-six".