28687116 has 24 divisors (see below), whose sum is σ = 67103344. Its totient is φ = 9538560.

The previous prime is 28687097. The next prime is 28687117. The reversal of 28687116 is 61178682.

It is not an unprimeable number, because it can be changed into a prime (28687117) 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, 2436 + ... + 7956.

Almost surely, 2^28687116 is an apocalyptic number.

It is an amenable number.

28687116 is an abundant number, since it is smaller than the sum of its proper divisors (38416228).

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

28687116 is a wasteful number, since it uses less digits than its factorization.

28687116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5961 (or 5959 counting only the distinct ones).

The product of its digits is 32256, while the sum is 39.

The square root of 28687116 is about 5356.0354741170. The cubic root of 28687116 is about 306.1227667505.

The spelling of 28687116 in words is "twenty-eight million, six hundred eighty-seven thousand, one hundred sixteen".