28164206 has 24 divisors (see below), whose sum is σ = 51296016. Its totient is φ = 11358720.

The previous prime is 28164197. The next prime is 28164221. The reversal of 28164206 is 60246182.

It is a super-2 number, since 2×28164206² = 1586444999220872, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 566 + ... + 7526.

It is an arithmetic number, because the mean of its divisors is an integer number (2137334).

Almost surely, 2^28164206 is an apocalyptic number.

28164206 is a deficient number, since it is larger than the sum of its proper divisors (23131810).

28164206 is a wasteful number, since it uses less digits than its factorization.

28164206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7004 (or 6987 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 28164206 is about 5306.9959487454. The cubic root of 28164206 is about 304.2513430936.

The spelling of 28164206 in words is "twenty-eight million, one hundred sixty-four thousand, two hundred six".