222198720 has 112 divisors (see below), whose sum is σ = 717621120. Its totient is φ = 58233856.

The previous prime is 222198709. The next prime is 222198763. The reversal of 222198720 is 27891222.

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, 54679 + ... + 58601.

Almost surely, 2^222198720 is an apocalyptic number.

222198720 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 222198720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (358810560).

222198720 is an abundant number, since it is smaller than the sum of its proper divisors (495422400).

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

222198720 is a wasteful number, since it uses less digits than its factorization.

222198720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4002 (or 3992 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 222198720 is about 14906.3315406575. The cubic root of 222198720 is about 605.6855103386.

The spelling of 222198720 in words is "two hundred twenty-two million, one hundred ninety-eight thousand, seven hundred twenty".