222864628 has 48 divisors (see below), whose sum is σ = 477719424. Its totient is φ = 88796160.

The previous prime is 222864599. The next prime is 222864671. The reversal of 222864628 is 826468222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36688 + ... + 42328.

It is an arithmetic number, because the mean of its divisors is an integer number (9952488).

Almost surely, 2^222864628 is an apocalyptic number.

222864628 is a gapful number since it is divisible by the number (28) 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 222864628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238859712).

222864628 is an abundant number, since it is smaller than the sum of its proper divisors (254854796).

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

222864628 is a wasteful number, since it uses less digits than its factorization.

222864628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5752 (or 5750 counting only the distinct ones).

The product of its digits is 147456, while the sum is 40.

The square root of 222864628 is about 14928.6512451728. The cubic root of 222864628 is about 606.2899671387.

The spelling of 222864628 in words is "two hundred twenty-two million, eight hundred sixty-four thousand, six hundred twenty-eight".