222688000 has 72 divisors (see below), whose sum is σ = 554823360. Its totient is φ = 89062400.

The previous prime is 222687991. The next prime is 222688027. The reversal of 222688000 is 886222.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 222688000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28521 + ... + 35479.

It is an arithmetic number, because the mean of its divisors is an integer number (7705880).

Almost surely, 2^222688000 is an apocalyptic number.

222688000 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 222688000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277411680).

222688000 is an abundant number, since it is smaller than the sum of its proper divisors (332135360).

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

222688000 is an frugal number, since it uses more digits than its factorization.

222688000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6990 (or 6966 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 222688000 is about 14922.7343338947. The cubic root of 222688000 is about 606.1297561502.

The spelling of 222688000 in words is "two hundred twenty-two million, six hundred eighty-eight thousand".