812022016 has 81 divisors (see below), whose sum is σ = 1768050291. Its totient is φ = 372043776.

The previous prime is 812021989. The next prime is 812022041. The reversal of 812022016 is 610220218.

The square root of 812022016 is 28496.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 72182016 + 739840000 = 8496^2 + 27200^2 .

It is a Duffinian number.

It is an unprimeable number.

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 8 ways as a sum of consecutive naturals, for example, 5927100 + ... + 5927236.

Almost surely, 2^812022016 is an apocalyptic number.

812022016 is the 28496-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 812022016

812022016 is an abundant number, since it is smaller than the sum of its proper divisors (956028275).

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

812022016 is an equidigital number, since it uses as much as digits as its factorization.

812022016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316 (or 152 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The cubic root of 812022016 is about 932.9447706835.

The spelling of 812022016 in words is "eight hundred twelve million, twenty-two thousand, sixteen".