222807312 has 240 divisors, whose sum is σ = 785366400. Its totient is φ = 58593024.

The previous prime is 222807311. The next prime is 222807331. The reversal of 222807312 is 213708222.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (222807311) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 641923 + ... + 642269.

It is an arithmetic number, because the mean of its divisors is an integer number (3272360).

Almost surely, 2^222807312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222807312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (392683200).

222807312 is an abundant number, since it is smaller than the sum of its proper divisors (562559088).

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

222807312 is a wasteful number, since it uses less digits than its factorization.

222807312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395 (or 372 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 222807312 is about 14926.7314573553. The cubic root of 222807312 is about 606.2379877593.

It can be divided in two parts, 22280 and 7312, that added together give a palindrome (29592).

The spelling of 222807312 in words is "two hundred twenty-two million, eight hundred seven thousand, three hundred twelve".