812682128 has 20 divisors (see below), whose sum is σ = 1598074800. Its totient is φ = 400275744.

The previous prime is 812682121. The next prime is 812682131. The reversal of 812682128 is 821286218.

It is a junction number, because it is equal to n+sod(n) for n = 812682091 and 812682100.

It is not an unprimeable number, because it can be changed into a prime (812682121) 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, 377978 + ... + 380121.

It is an arithmetic number, because the mean of its divisors is an integer number (79903740).

Almost surely, 2^812682128 is an apocalyptic number.

It is an amenable number.

812682128 is a deficient number, since it is larger than the sum of its proper divisors (785392672).

812682128 is a wasteful number, since it uses less digits than its factorization.

812682128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758174 (or 758168 counting only the distinct ones).

The product of its digits is 24576, while the sum is 38.

The square root of 812682128 is about 28507.5801849263. The cubic root of 812682128 is about 933.1975065381.

The spelling of 812682128 in words is "eight hundred twelve million, six hundred eighty-two thousand, one hundred twenty-eight".