28872984 has 32 divisors (see below), whose sum is σ = 82494720. Its totient is φ = 8249376.

The previous prime is 28872983. The next prime is 28873001. The reversal of 28872984 is 48927882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28872983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85764 + ... + 86099.

It is an arithmetic number, because the mean of its divisors is an integer number (2577960).

Almost surely, 2^28872984 is an apocalyptic number.

28872984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28872984 is an abundant number, since it is smaller than the sum of its proper divisors (53621736).

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

28872984 is a wasteful number, since it uses less digits than its factorization.

28872984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171879 (or 171875 counting only the distinct ones).

The product of its digits is 516096, while the sum is 48.

The square root of 28872984 is about 5373.3587261600. The cubic root of 28872984 is about 306.7824819857.

The spelling of 28872984 in words is "twenty-eight million, eight hundred seventy-two thousand, nine hundred eighty-four".