28251166 has 8 divisors (see below), whose sum is σ = 42404040. Its totient is φ = 14116488.

The previous prime is 28251151. The next prime is 28251193. The reversal of 28251166 is 66115282.

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

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 3 ways as a sum of consecutive naturals, for example, 420 + ... + 7528.

It is an arithmetic number, because the mean of its divisors is an integer number (5300505).

Almost surely, 2^28251166 is an apocalyptic number.

28251166 is a deficient number, since it is larger than the sum of its proper divisors (14152874).

28251166 is a wasteful number, since it uses less digits than its factorization.

28251166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9098.

The product of its digits is 5760, while the sum is 31.

The square root of 28251166 is about 5315.1825932888. The cubic root of 28251166 is about 304.5641575585.

The spelling of 28251166 in words is "twenty-eight million, two hundred fifty-one thousand, one hundred sixty-six".