222738312 has 64 divisors (see below), whose sum is σ = 565200000. Its totient is φ = 73142784.

The previous prime is 222738293. The next prime is 222738331. The reversal of 222738312 is 213837222.

222738312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (222738293) and next prime (222738331).

It is a super-2 number, since 2×222738312² = 99224711265218688, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 222738312.

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, 711468 + ... + 711780.

It is an arithmetic number, because the mean of its divisors is an integer number (8831250).

Almost surely, 2^222738312 is an apocalyptic number.

It is an amenable number.

222738312 is an abundant number, since it is smaller than the sum of its proper divisors (342461688).

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

222738312 is a wasteful number, since it uses less digits than its factorization.

222738312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670 (or 666 counting only the distinct ones).

The product of its digits is 8064, while the sum is 30.

The square root of 222738312 is about 14924.4199887299. The cubic root of 222738312 is about 606.1754004357.

The spelling of 222738312 in words is "two hundred twenty-two million, seven hundred thirty-eight thousand, three hundred twelve".