222464172 has 24 divisors (see below), whose sum is σ = 593238016. Its totient is φ = 63561168.

The previous prime is 222464149. The next prime is 222464197. The reversal of 222464172 is 271464222.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1324108 + ... + 1324275.

Almost surely, 2^222464172 is an apocalyptic number.

It is an amenable number.

222464172 is an abundant number, since it is smaller than the sum of its proper divisors (370773844).

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

222464172 is a wasteful number, since it uses less digits than its factorization.

222464172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2648397 (or 2648395 counting only the distinct ones).

The product of its digits is 10752, while the sum is 30.

The square root of 222464172 is about 14915.2328845379. The cubic root of 222464172 is about 605.9266105072.

Subtracting 222464172 from its reverse (271464222), we obtain a triangular number (49000050 = T₉₈₉₉).

The spelling of 222464172 in words is "two hundred twenty-two million, four hundred sixty-four thousand, one hundred seventy-two".