28996288 has 56 divisors (see below), whose sum is σ = 63093600. Its totient is φ = 13160448.

The previous prime is 28996249. The next prime is 28996309. The reversal of 28996288 is 88269982.

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, 31093 + ... + 32011.

Almost surely, 2^28996288 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 28996288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31546800).

28996288 is an abundant number, since it is smaller than the sum of its proper divisors (34097312).

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

28996288 is a wasteful number, since it uses less digits than its factorization.

28996288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 977 (or 967 counting only the distinct ones).

The product of its digits is 995328, while the sum is 52.

The square root of 28996288 is about 5384.8201455573. The cubic root of 28996288 is about 307.2185734575.

The spelling of 28996288 in words is "twenty-eight million, nine hundred ninety-six thousand, two hundred eighty-eight".