811330 has 24 divisors (see below), whose sum is σ = 1592892. Its totient is φ = 295776.

The previous prime is 811297. The next prime is 811337. The reversal of 811330 is 33118.

It can be written as a sum of positive squares in 2 ways, for example, as 755161 + 56169 = 869^2 + 237^2 .

It is not an unprimeable number, because it can be changed into a prime (811337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10231 + ... + 10309.

2⁸¹¹³³⁰ is an apocalyptic number.

811330 is a deficient number, since it is larger than the sum of its proper divisors (781562).

811330 is a wasteful number, since it uses less digits than its factorization.

811330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178 (or 99 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 811330 is about 900.7385858283. The cubic root of 811330 is about 93.2679672701.

Adding to 811330 its reverse (33118), we get a palindrome (844448).

The spelling of 811330 in words is "eight hundred eleven thousand, three hundred thirty".