28803008 has 42 divisors (see below), whose sum is σ = 61914024. Its totient is φ = 13288704.

The previous prime is 28803001. The next prime is 28803011. The reversal of 28803008 is 80030882.

It is a super-2 number, since 2×28803008² = 1659226539696128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28803001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9485 + ... + 12147.

Almost surely, 2^28803008 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 28803008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30957012).

28803008 is an abundant number, since it is smaller than the sum of its proper divisors (33111016).

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

28803008 is a wasteful number, since it uses less digits than its factorization.

28803008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2701 (or 2678 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 28803008 is about 5366.8433925353. The cubic root of 28803008 is about 306.5344441543.

The spelling of 28803008 in words is "twenty-eight million, eight hundred three thousand, eight".