28880308 has 24 divisors (see below), whose sum is σ = 51430400. Its totient is φ = 14188608.

The previous prime is 28880303. The next prime is 28880309. The reversal of 28880308 is 80308882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28880303) 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, 70408 + ... + 70816.

Almost surely, 2^28880308 is an apocalyptic number.

It is an amenable number.

28880308 is a deficient number, since it is larger than the sum of its proper divisors (22550092).

28880308 is a wasteful number, since it uses less digits than its factorization.

28880308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679 (or 677 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 37.

The square root of 28880308 is about 5374.0401933741. The cubic root of 28880308 is about 306.8084195535.

The spelling of 28880308 in words is "twenty-eight million, eight hundred eighty thousand, three hundred eight".