28836984 has 64 divisors (see below), whose sum is σ = 82800000. Its totient is φ = 8277120.

The previous prime is 28836967. The next prime is 28837007. The reversal of 28836984 is 48963882.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2142 + ... + 7890.

It is an arithmetic number, because the mean of its divisors is an integer number (1293750).

Almost surely, 2^28836984 is an apocalyptic number.

28836984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28836984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41400000).

28836984 is an abundant number, since it is smaller than the sum of its proper divisors (53963016).

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

28836984 is a wasteful number, since it uses less digits than its factorization.

28836984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5788 (or 5784 counting only the distinct ones).

The product of its digits is 663552, while the sum is 48.

The square root of 28836984 is about 5370.0078212234. The cubic root of 28836984 is about 306.6549260366.

The spelling of 28836984 in words is "twenty-eight million, eight hundred thirty-six thousand, nine hundred eighty-four".