28666316 has 24 divisors (see below), whose sum is σ = 57706656. Its totient is φ = 12205440.

The previous prime is 28666283. The next prime is 28666327. The reversal of 28666316 is 61366682.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 28666316.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1136 + ... + 7656.

It is an arithmetic number, because the mean of its divisors is an integer number (2404444).

Almost surely, 2^28666316 is an apocalyptic number.

It is an amenable number.

28666316 is an abundant number, since it is smaller than the sum of its proper divisors (29040340).

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

28666316 is a wasteful number, since it uses less digits than its factorization.

28666316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6689 (or 6687 counting only the distinct ones).

The product of its digits is 62208, while the sum is 38.

The square root of 28666316 is about 5354.0933873066. The cubic root of 28666316 is about 306.0487626450.

It can be divided in two parts, 28666 and 316, that added together give a palindrome (28982).

The spelling of 28666316 in words is "twenty-eight million, six hundred sixty-six thousand, three hundred sixteen".