28880984 has 32 divisors (see below), whose sum is σ = 61117200. Its totient is φ = 12673920.

The previous prime is 28880963. The next prime is 28880989. The reversal of 28880984 is 48908882.

It is a super-2 number, since 2×28880984² = 1668222473616512, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28880989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3107 + ... + 8210.

Almost surely, 2^28880984 is an apocalyptic number.

It is an amenable number.

28880984 is an abundant number, since it is smaller than the sum of its proper divisors (32236216).

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

28880984 is a wasteful number, since it uses less digits than its factorization.

28880984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11363 (or 11359 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 47.

The square root of 28880984 is about 5374.1030879580. The cubic root of 28880984 is about 306.8108133516.

The spelling of 28880984 in words is "twenty-eight million, eight hundred eighty thousand, nine hundred eighty-four".