222172656 has 40 divisors (see below), whose sum is σ = 574487040. Its totient is φ = 73987776.

The previous prime is 222172651. The next prime is 222172667. The reversal of 222172656 is 656271222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222172651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86235 + ... + 88773.

It is an arithmetic number, because the mean of its divisors is an integer number (14362176).

Almost surely, 2^222172656 is an apocalyptic number.

It is an amenable number.

222172656 is an abundant number, since it is smaller than the sum of its proper divisors (352314384).

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

222172656 is a wasteful number, since it uses less digits than its factorization.

222172656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4373 (or 4367 counting only the distinct ones).

The product of its digits is 20160, while the sum is 33.

The square root of 222172656 is about 14905.4572556497. The cubic root of 222172656 is about 605.6618270272.

The spelling of 222172656 in words is "two hundred twenty-two million, one hundred seventy-two thousand, six hundred fifty-six".