28860816 has 20 divisors (see below), whose sum is σ = 74557232. Its totient is φ = 9620256.

The previous prime is 28860803. The next prime is 28860817. The reversal of 28860816 is 61806882.

It is not an unprimeable number, because it can be changed into a prime (28860817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 300586 + ... + 300681.

Almost surely, 2^28860816 is an apocalyptic number.

It is an amenable number.

28860816 is an abundant number, since it is smaller than the sum of its proper divisors (45696416).

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

28860816 is a wasteful number, since it uses less digits than its factorization.

28860816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601278 (or 601272 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 28860816 is about 5372.2263541292. The cubic root of 28860816 is about 306.7393799432.

The spelling of 28860816 in words is "twenty-eight million, eight hundred sixty thousand, eight hundred sixteen".