28891182 has 16 divisors (see below), whose sum is σ = 59012352. Its totient is φ = 9425400.

The previous prime is 28891171. The next prime is 28891189. The reversal of 28891182 is 28119882.

It is a self number, because there is not a number n which added to its sum of digits gives 28891182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28891189) 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 7 ways as a sum of consecutive naturals, for example, 50944 + ... + 51507.

It is an arithmetic number, because the mean of its divisors is an integer number (3688272).

Almost surely, 2^28891182 is an apocalyptic number.

28891182 is an abundant number, since it is smaller than the sum of its proper divisors (30121170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28891182 is a wasteful number, since it uses less digits than its factorization.

28891182 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102503.

The product of its digits is 18432, while the sum is 39.

The square root of 28891182 is about 5375.0518137038. The cubic root of 28891182 is about 306.8469211757.

The spelling of 28891182 in words is "twenty-eight million, eight hundred ninety-one thousand, one hundred eighty-two".