812243834 has 16 divisors (see below), whose sum is σ = 1275388416. Its totient is φ = 387483600.

The previous prime is 812243821. The next prime is 812243837. The reversal of 812243834 is 438342218.

It is a junction number, because it is equal to n+sod(n) for n = 812243794 and 812243803.

It is not an unprimeable number, because it can be changed into a prime (812243837) 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, 87857 + ... + 96660.

It is an arithmetic number, because the mean of its divisors is an integer number (79711776).

Almost surely, 2^812243834 is an apocalyptic number.

812243834 is a deficient number, since it is larger than the sum of its proper divisors (463144582).

812243834 is a wasteful number, since it uses less digits than its factorization.

812243834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184621.

The product of its digits is 36864, while the sum is 35.

The square root of 812243834 is about 28499.8918243561. The cubic root of 812243834 is about 933.0297130038.

It can be divided in two parts, 81224 and 3834, that added together give a palindrome (85058).

The spelling of 812243834 in words is "eight hundred twelve million, two hundred forty-three thousand, eight hundred thirty-four".