813028 has 12 divisors (see below), whose sum is σ = 1429120. Its totient is φ = 404712.

The previous prime is 813023. The next prime is 813041. The reversal of 813028 is 820318.

It is a super-2 number, since 2×813028² = 1322029057568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (813023) 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, 1525 + ... + 1987.

2⁸¹³⁰²⁸ is an apocalyptic number.

It is an amenable number.

813028 is a deficient number, since it is larger than the sum of its proper divisors (616092).

813028 is a wasteful number, since it uses less digits than its factorization.

813028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906 (or 904 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 813028 is about 901.6806530030. The cubic root of 813028 is about 93.3329875271.

The spelling of 813028 in words is "eight hundred thirteen thousand, twenty-eight".