817028516 has 12 divisors (see below), whose sum is σ = 1431572940. Its totient is φ = 408007680.

The previous prime is 817028501. The next prime is 817028521. The reversal of 817028516 is 615820718.

817028516 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 663268516 + 153760000 = 25754^2 + 12400^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 817028516.

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, 123005 + ... + 129476.

It is an arithmetic number, because the mean of its divisors is an integer number (119297745).

Almost surely, 2^817028516 is an apocalyptic number.

It is an amenable number.

817028516 is a deficient number, since it is larger than the sum of its proper divisors (614544424).

817028516 is a wasteful number, since it uses less digits than its factorization.

817028516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253294 (or 253292 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 38.

The square root of 817028516 is about 28583.7106758377. The cubic root of 817028516 is about 934.8581923402.

The spelling of 817028516 in words is "eight hundred seventeen million, twenty-eight thousand, five hundred sixteen".