1028198 has 8 divisors (see below), whose sum is σ = 1580040. Its totient is φ = 501520.

The previous prime is 1028191. The next prime is 1028201. The reversal of 1028198 is 8918201.

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

It is a super-2 number, since 2×1028198² = 2114382254408, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1028198.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028191) 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, 6188 + ... + 6351.

It is an arithmetic number, because the mean of its divisors is an integer number (197505).

2^1028198 is an apocalyptic number.

1028198 is a deficient number, since it is larger than the sum of its proper divisors (551842).

1028198 is a wasteful number, since it uses less digits than its factorization.

1028198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12582.

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 1028198 is about 1014.0009861928. Note that the first 3 decimals coincide. The cubic root of 1028198 is about 100.9312344387.

The spelling of 1028198 in words is "one million, twenty-eight thousand, one hundred ninety-eight".