28595666 has 32 divisors (see below), whose sum is σ = 49963392. Its totient is φ = 12130560.

The previous prime is 28595663. The next prime is 28595669. The reversal of 28595666 is 66659582.

It is an interprime number because it is at equal distance from previous prime (28595663) and next prime (28595669).

It is a super-2 number, since 2×28595666² = 1635424227967112, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28595666.

It is not an unprimeable number, because it can be changed into a prime (28595663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58475 + ... + 58961.

It is an arithmetic number, because the mean of its divisors is an integer number (1561356).

Almost surely, 2^28595666 is an apocalyptic number.

28595666 is a deficient number, since it is larger than the sum of its proper divisors (21367726).

28595666 is a wasteful number, since it uses less digits than its factorization.

28595666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674.

The product of its digits is 777600, while the sum is 47.

The square root of 28595666 is about 5347.4915614707. The cubic root of 28595666 is about 305.7971301172.

The spelling of 28595666 in words is "twenty-eight million, five hundred ninety-five thousand, six hundred sixty-six".