28195984 has 20 divisors (see below), whose sum is σ = 54850284. Its totient is φ = 14041088.

The previous prime is 28195963. The next prime is 28195997. The reversal of 28195984 is 48959182.

It can be written as a sum of positive squares in 2 ways, for example, as 13542400 + 14653584 = 3680^2 + 3828^2 .

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, 684 + ... + 7540.

Almost surely, 2^28195984 is an apocalyptic number.

It is an amenable number.

28195984 is a deficient number, since it is larger than the sum of its proper divisors (26654300).

28195984 is a wasteful number, since it uses less digits than its factorization.

28195984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7122 (or 7116 counting only the distinct ones).

The product of its digits is 207360, while the sum is 46.

The square root of 28195984 is about 5309.9890772016. The cubic root of 28195984 is about 304.3657301884.

The spelling of 28195984 in words is "twenty-eight million, one hundred ninety-five thousand, nine hundred eighty-four".