28900308 has 24 divisors (see below), whose sum is σ = 69610240. Its totient is φ = 9322560.

The previous prime is 28900307. The next prime is 28900309. The reversal of 28900308 is 80300982.

It is an interprime number because it is at equal distance from previous prime (28900307) and next prime (28900309).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28900301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38473 + ... + 39216.

Almost surely, 2^28900308 is an apocalyptic number.

It is an amenable number.

28900308 is an abundant number, since it is smaller than the sum of its proper divisors (40709932).

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

28900308 is a wasteful number, since it uses less digits than its factorization.

28900308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77727 (or 77725 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 28900308 is about 5375.9006687252. The cubic root of 28900308 is about 306.8792261908.

The spelling of 28900308 in words is "twenty-eight million, nine hundred thousand, three hundred eight".