28566846 has 48 divisors (see below), whose sum is σ = 77171328. Its totient is φ = 7419600.

The previous prime is 28566833. The next prime is 28566847. The reversal of 28566846 is 64866582.

28566846 is a `hidden beast` number, since 2 + 8 + 566 + 84 + 6 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28566847) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8920 + ... + 11691.

It is an arithmetic number, because the mean of its divisors is an integer number (1607736).

Almost surely, 2^28566846 is an apocalyptic number.

28566846 is an abundant number, since it is smaller than the sum of its proper divisors (48604482).

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

28566846 is a wasteful number, since it uses less digits than its factorization.

28566846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20637 (or 20634 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The square root of 28566846 is about 5344.7961607530. The cubic root of 28566846 is about 305.6943635455.

The spelling of 28566846 in words is "twenty-eight million, five hundred sixty-six thousand, eight hundred forty-six".