1028188 has 12 divisors (see below), whose sum is σ = 2056432. Its totient is φ = 440640.

The previous prime is 1028149. The next prime is 1028189. The reversal of 1028188 is 8818201.

1028188 is an admirable number.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 36721 = 1028188 / (1 + 0 + 2 + 8 + 1 + 8 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18333 + ... + 18388.

2^1028188 is an apocalyptic number.

It is an amenable number.

1028188 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1028188 is a wasteful number, since it uses less digits than its factorization.

1028188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36732 (or 36730 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 28.

The square root of 1028188 is about 1013.9960552192. The cubic root of 1028188 is about 100.9309072269.

The spelling of 1028188 in words is "one million, twenty-eight thousand, one hundred eighty-eight".