222450312 has 64 divisors (see below), whose sum is σ = 637729920. Its totient is φ = 63341568.

The previous prime is 222450307. The next prime is 222450323. The reversal of 222450312 is 213054222.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 51168 + ... + 55344.

It is an arithmetic number, because the mean of its divisors is an integer number (9964530).

Almost surely, 2^222450312 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 222450312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (318864960).

222450312 is an abundant number, since it is smaller than the sum of its proper divisors (415279608).

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

222450312 is a wasteful number, since it uses less digits than its factorization.

222450312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4510 (or 4506 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 222450312 is about 14914.7682516357. The cubic root of 222450312 is about 605.9140267322.

The spelling of 222450312 in words is "two hundred twenty-two million, four hundred fifty thousand, three hundred twelve".