28179868 has 12 divisors (see below), whose sum is σ = 50905792. Its totient is φ = 13635360.

The previous prime is 28179859. The next prime is 28179881. The reversal of 28179868 is 86897182.

It is a super-3 number, since 3×28179868³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113505 + ... + 113752.

Almost surely, 2^28179868 is an apocalyptic number.

It is an amenable number.

28179868 is a deficient number, since it is larger than the sum of its proper divisors (22725924).

28179868 is a wasteful number, since it uses less digits than its factorization.

28179868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227292 (or 227290 counting only the distinct ones).

The product of its digits is 387072, while the sum is 49.

The square root of 28179868 is about 5308.4713430516. The cubic root of 28179868 is about 304.3077302861.

The spelling of 28179868 in words is "twenty-eight million, one hundred seventy-nine thousand, eight hundred sixty-eight".