28863008 has 36 divisors (see below), whose sum is σ = 60382602. Its totient is φ = 13578240.

The previous prime is 28863007. The next prime is 28863011. The reversal of 28863008 is 80036882.

It can be written as a sum of positive squares in 3 ways, for example, as 22771984 + 6091024 = 4772^2 + 2468^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28863007) 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, 7688 + ... + 10808.

Almost surely, 2^28863008 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 28863008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30191301).

28863008 is an abundant number, since it is smaller than the sum of its proper divisors (31519594).

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

28863008 is a wasteful number, since it uses less digits than its factorization.

28863008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3165 (or 3140 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 28863008 is about 5372.4303625082. The cubic root of 28863008 is about 306.7471454397.

The spelling of 28863008 in words is "twenty-eight million, eight hundred sixty-three thousand, eight".