28512996 has 48 divisors (see below), whose sum is σ = 70963200. Its totient is φ = 8884512.

The previous prime is 28512971. The next prime is 28513013. The reversal of 28512996 is 69921582.

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, 17221 + ... + 18803.

It is an arithmetic number, because the mean of its divisors is an integer number (1478400).

Almost surely, 2^28512996 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28512996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35481600).

28512996 is an abundant number, since it is smaller than the sum of its proper divisors (42450204).

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

28512996 is a wasteful number, since it uses less digits than its factorization.

28512996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1688 (or 1686 counting only the distinct ones).

The product of its digits is 77760, while the sum is 42.

The square root of 28512996 is about 5339.7561742087. The cubic root of 28512996 is about 305.5021594311.

The spelling of 28512996 in words is "twenty-eight million, five hundred twelve thousand, nine hundred ninety-six".