1028698836 has 192 divisors, whose sum is σ = 2874009600. Its totient is φ = 283046400.

The previous prime is 1028698819. The next prime is 1028698841. The reversal of 1028698836 is 6388968201.

1028698836 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9437550 + ... + 9437658.

It is an arithmetic number, because the mean of its divisors is an integer number (14968800).

Almost surely, 2^1028698836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1028698836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1437004800).

1028698836 is an abundant number, since it is smaller than the sum of its proper divisors (1845310764).

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

1028698836 is a wasteful number, since it uses less digits than its factorization.

1028698836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270 (or 268 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 51.

The square root of 1028698836 is about 32073.3352802605. The cubic root of 1028698836 is about 1009.4761967137.

The spelling of 1028698836 in words is "one billion, twenty-eight million, six hundred ninety-eight thousand, eight hundred thirty-six".