28185182 has 8 divisors (see below), whose sum is σ = 42303576. Its totient is φ = 14083992.

The previous prime is 28185181. The next prime is 28185197. The reversal of 28185182 is 28158182.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28185181) 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, 1208 + ... + 7604.

It is an arithmetic number, because the mean of its divisors is an integer number (5287947).

Almost surely, 2^28185182 is an apocalyptic number.

28185182 is a deficient number, since it is larger than the sum of its proper divisors (14118394).

28185182 is a wasteful number, since it uses less digits than its factorization.

28185182 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8602.

The product of its digits is 10240, while the sum is 35.

The square root of 28185182 is about 5308.9718401966. The cubic root of 28185182 is about 304.3268572936.

Subtracting from 28185182 its reverse (28158182), we obtain a cube (27000 = 30³).

It can be divided in two parts, 2818 and 5182, that added together give a cube (8000 = 20³).

The spelling of 28185182 in words is "twenty-eight million, one hundred eighty-five thousand, one hundred eighty-two".