82851222 has 16 divisors (see below), whose sum is σ = 168511680. Its totient is φ = 27148872.

The previous prime is 82851211. The next prime is 82851247. The reversal of 82851222 is 22215828.

It is a self number, because there is not a number n which added to its sum of digits gives 82851222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116668 + ... + 117375.

It is an arithmetic number, because the mean of its divisors is an integer number (10531980).

Almost surely, 2^82851222 is an apocalyptic number.

82851222 is an abundant number, since it is smaller than the sum of its proper divisors (85660458).

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

82851222 is a wasteful number, since it uses less digits than its factorization.

82851222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234107.

The product of its digits is 5120, while the sum is 30.

The square root of 82851222 is about 9102.2646632583. The cubic root of 82851222 is about 435.9462766620.

The spelling of 82851222 in words is "eighty-two million, eight hundred fifty-one thousand, two hundred twenty-two".