28795666 has 8 divisors (see below), whose sum is σ = 44683020. Its totient is φ = 13901328.

The previous prime is 28795661. The next prime is 28795667. The reversal of 28795666 is 66659782.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 28037025 + 758641 = 5295^2 + 871^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (28795661) 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 3 ways as a sum of consecutive naturals, for example, 248181 + ... + 248296.

Almost surely, 2^28795666 is an apocalyptic number.

28795666 is a deficient number, since it is larger than the sum of its proper divisors (15887354).

28795666 is a wasteful number, since it uses less digits than its factorization.

28795666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496508.

The product of its digits is 1088640, while the sum is 49.

The square root of 28795666 is about 5366.1593341980. The cubic root of 28795666 is about 306.5083963292.

The spelling of 28795666 in words is "twenty-eight million, seven hundred ninety-five thousand, six hundred sixty-six".