28198284 has 24 divisors (see below), whose sum is σ = 66194688. Its totient is φ = 9342480.

The previous prime is 28198273. The next prime is 28198301. The reversal of 28198284 is 48289182.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5032 + ... + 9039.

It is an arithmetic number, because the mean of its divisors is an integer number (2758112).

Almost surely, 2^28198284 is an apocalyptic number.

It is an amenable number.

28198284 is an abundant number, since it is smaller than the sum of its proper divisors (37996404).

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

28198284 is a wasteful number, since it uses less digits than its factorization.

28198284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14245 (or 14243 counting only the distinct ones).

The product of its digits is 73728, while the sum is 42.

The square root of 28198284 is about 5310.2056457354. The cubic root of 28198284 is about 304.3740058604.

It can be divided in two parts, 28198 and 284, that added together give a palindrome (28482).

The spelling of 28198284 in words is "twenty-eight million, one hundred ninety-eight thousand, two hundred eighty-four".