222445650 has 192 divisors, whose sum is σ = 673099776. Its totient is φ = 47520000.

The previous prime is 222445609. The next prime is 222445661. The reversal of 222445650 is 56544222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1473075 + ... + 1473225.

It is an arithmetic number, because the mean of its divisors is an integer number (3505728).

Almost surely, 2^222445650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222445650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (336549888).

222445650 is an abundant number, since it is smaller than the sum of its proper divisors (450654126).

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

222445650 is a wasteful number, since it uses less digits than its factorization.

222445650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 222445650 is about 14914.6119627699. The cubic root of 222445650 is about 605.9097938904.

Adding to 222445650 its reverse (56544222), we get a palindrome (278989872).

It can be divided in two parts, 2224 and 45650, that added together give a palindrome (47874).

The spelling of 222445650 in words is "two hundred twenty-two million, four hundred forty-five thousand, six hundred fifty".