222198340 has 144 divisors (see below), whose sum is σ = 593635392. Its totient is φ = 69237504.

The previous prime is 222198289. The next prime is 222198373. The reversal of 222198340 is 43891222.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1363099 + ... + 1363261.

It is an arithmetic number, because the mean of its divisors is an integer number (4122468).

Almost surely, 2^222198340 is an apocalyptic number.

222198340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222198340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296817696).

222198340 is an abundant number, since it is smaller than the sum of its proper divisors (371437052).

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

222198340 is a wasteful number, since it uses less digits than its factorization.

222198340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306 (or 297 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 222198340 is about 14906.3187943905. The cubic root of 222198340 is about 605.6851650611.

The spelling of 222198340 in words is "two hundred twenty-two million, one hundred ninety-eight thousand, three hundred forty".