8191028 has 12 divisors (see below), whose sum is σ = 14354340. Its totient is φ = 4089792.

The previous prime is 8190997. The next prime is 8191049. The reversal of 8191028 is 8201918.

It can be written as a sum of positive squares in 2 ways, for example, as 3429904 + 4761124 = 1852^2 + 2182^2 .

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5000 + ... + 6432.

It is an arithmetic number, because the mean of its divisors is an integer number (1196195).

Almost surely, 2^8191028 is an apocalyptic number.

It is an amenable number.

8191028 is a deficient number, since it is larger than the sum of its proper divisors (6163312).

8191028 is a wasteful number, since it uses less digits than its factorization.

8191028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2866 (or 2864 counting only the distinct ones).

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

The square root of 8191028 is about 2861.9972047506. The cubic root of 8191028 is about 201.5793947299.

The spelling of 8191028 in words is "eight million, one hundred ninety-one thousand, twenty-eight".