813030828 has 24 divisors (see below), whose sum is σ = 1897663488. Its totient is φ = 270925776.

The previous prime is 813030821. The next prime is 813030839. The reversal of 813030828 is 828030318.

It is a super-2 number, since 2×813030828² = 1322038254556731168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (813030821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38725 + ... + 55907.

It is an arithmetic number, because the mean of its divisors is an integer number (79069312).

Almost surely, 2^813030828 is an apocalyptic number.

It is an amenable number.

813030828 is an abundant number, since it is smaller than the sum of its proper divisors (1084632660).

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

813030828 is a wasteful number, since it uses less digits than its factorization.

813030828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21133 (or 21131 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 813030828 is about 28513.6954462237. The cubic root of 813030828 is about 933.3309574203.

The spelling of 813030828 in words is "eight hundred thirteen million, thirty thousand, eight hundred twenty-eight".