811727834 has 8 divisors (see below), whose sum is σ = 1217762580. Its totient is φ = 405806976.

The previous prime is 811727821. The next prime is 811727879. The reversal of 811727834 is 438727118.

It can be written as a sum of positive squares in 2 ways, for example, as 789778609 + 21949225 = 28103^2 + 4685^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 811727791 and 811727800.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 7589 + ... + 41000.

Almost surely, 2^811727834 is an apocalyptic number.

811727834 is a deficient number, since it is larger than the sum of its proper divisors (406034746).

811727834 is a wasteful number, since it uses less digits than its factorization.

811727834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56944.

The product of its digits is 75264, while the sum is 41.

The square root of 811727834 is about 28490.8377202216. The cubic root of 811727834 is about 932.8320936446.

The spelling of 811727834 in words is "eight hundred eleven million, seven hundred twenty-seven thousand, eight hundred thirty-four".