28158182 has 8 divisors (see below), whose sum is σ = 45486336. Its totient is φ = 12996072.

The previous prime is 28158181. The next prime is 28158191. The reversal of 28158182 is 28185182.

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 (28158181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 541478 + ... + 541529.

It is an arithmetic number, because the mean of its divisors is an integer number (5685792).

Almost surely, 2^28158182 is an apocalyptic number.

28158182 is a deficient number, since it is larger than the sum of its proper divisors (17328154).

28158182 is a wasteful number, since it uses less digits than its factorization.

28158182 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1083022.

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

The square root of 28158182 is about 5306.4283656712. The cubic root of 28158182 is about 304.2296495916.

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

The spelling of 28158182 in words is "twenty-eight million, one hundred fifty-eight thousand, one hundred eighty-two".