8212326840 has 48 divisors (see below), whose sum is σ = 26690063400. Its totient is φ = 2189953728.

The previous prime is 8212326821. The next prime is 8212326907. The reversal of 8212326840 is 486232128.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 8212326795 and 8212326804.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11405650 + ... + 11406369.

Almost surely, 2^8212326840 is an apocalyptic number.

It is an amenable number.

8212326840 is an abundant number, since it is smaller than the sum of its proper divisors (18477736560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8212326840 is a wasteful number, since it uses less digits than its factorization.

8212326840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22812036 (or 22812029 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 8212326840 is about 90621.8894086854. The cubic root of 8212326840 is about 2017.5396342918.

Adding to 8212326840 its reverse (486232128), we get a palindrome (8698558968).

The spelling of 8212326840 in words is "eight billion, two hundred twelve million, three hundred twenty-six thousand, eight hundred forty".