216222692 has 36 divisors (see below), whose sum is σ = 442698480. Its totient is φ = 92134224.

The previous prime is 216222689. The next prime is 216222697. The reversal of 216222692 is 296222612.

It is not an unprimeable number, because it can be changed into a prime (216222697) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32003 + ... + 38165.

It is an arithmetic number, because the mean of its divisors is an integer number (12297180).

Almost surely, 2^216222692 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 216222692, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221349240).

216222692 is an abundant number, since it is smaller than the sum of its proper divisors (226475788).

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

216222692 is a wasteful number, since it uses less digits than its factorization.

216222692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6360 (or 6351 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 216222692 is about 14704.5126406828. The cubic root of 216222692 is about 600.2061254753.

The spelling of 216222692 in words is "two hundred sixteen million, two hundred twenty-two thousand, six hundred ninety-two".