28868508 has 24 divisors (see below), whose sum is σ = 74844560. Its totient is φ = 9622800.

The previous prime is 28868501. The next prime is 28868537. The reversal of 28868508 is 80586882.

28868508 is a `hidden beast` number, since 2 + 88 + 68 + 508 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28868501) 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, 133543 + ... + 133758.

Almost surely, 2^28868508 is an apocalyptic number.

It is an amenable number.

28868508 is an abundant number, since it is smaller than the sum of its proper divisors (45976052).

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

28868508 is a wasteful number, since it uses less digits than its factorization.

28868508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267314 (or 267306 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 45.

The square root of 28868508 is about 5372.9422107445. The cubic root of 28868508 is about 306.7666283033.

The spelling of 28868508 in words is "twenty-eight million, eight hundred sixty-eight thousand, five hundred eight".