28489804 has 24 divisors (see below), whose sum is σ = 57108128. Its totient is φ = 12182400.

The previous prime is 28489789. The next prime is 28489817. The reversal of 28489804 is 40898482.

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, 15982 + ... + 17674.

Almost surely, 2^28489804 is an apocalyptic number.

It is an amenable number.

28489804 is an abundant number, since it is smaller than the sum of its proper divisors (28618324).

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

28489804 is a wasteful number, since it uses less digits than its factorization.

28489804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2305 (or 2303 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 43.

The square root of 28489804 is about 5337.5840976981. The cubic root of 28489804 is about 305.4193068265.

The spelling of 28489804 in words is "twenty-eight million, four hundred eighty-nine thousand, eight hundred four".