822640112 has 80 divisors (see below), whose sum is σ = 1928328960. Its totient is φ = 332107776.

The previous prime is 822640109. The next prime is 822640121. The reversal of 822640112 is 211046228.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 409703 + ... + 411705.

It is an arithmetic number, because the mean of its divisors is an integer number (24104112).

Almost surely, 2^822640112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 822640112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (964164480).

822640112 is an abundant number, since it is smaller than the sum of its proper divisors (1105688848).

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

822640112 is a wasteful number, since it uses less digits than its factorization.

822640112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2230 (or 2224 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 822640112 is about 28681.7034361629. The cubic root of 822640112 is about 936.9936060328.

The spelling of 822640112 in words is "eight hundred twenty-two million, six hundred forty thousand, one hundred twelve".