222745600 has 264 divisors, whose sum is σ = 694473408. Its totient is φ = 68812800.

The previous prime is 222745573. The next prime is 222745619. The reversal of 222745600 is 6547222.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1971144 + ... + 1971256.

Almost surely, 2^222745600 is an apocalyptic number.

222745600 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 222745600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (347236704).

222745600 is an abundant number, since it is smaller than the sum of its proper divisors (471727808).

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

222745600 is a wasteful number, since it uses less digits than its factorization.

222745600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 222745600 is about 14924.6641503251. The cubic root of 222745600 is about 606.1820117189.

The spelling of 222745600 in words is "two hundred twenty-two million, seven hundred forty-five thousand, six hundred".