840222168 has 16 divisors (see below), whose sum is σ = 2100555480. Its totient is φ = 280074048.

The previous prime is 840222167. The next prime is 840222203. The reversal of 840222168 is 861222048.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840222167) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 17504605 + ... + 17504652.

Almost surely, 2^840222168 is an apocalyptic number.

It is an amenable number.

840222168 is an abundant number, since it is smaller than the sum of its proper divisors (1260333312).

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

840222168 is a wasteful number, since it uses less digits than its factorization.

840222168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35009266 (or 35009262 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 840222168 is about 28986.5860011144. The cubic root of 840222168 is about 943.6219729082.

The spelling of 840222168 in words is "eight hundred forty million, two hundred twenty-two thousand, one hundred sixty-eight".