222466538 has 16 divisors (see below), whose sum is σ = 381965760. Its totient is φ = 95194176.

The previous prime is 222466537. The next prime is 222466547. The reversal of 222466538 is 835664222.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (222466537) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2831 + ... + 21282.

It is an arithmetic number, because the mean of its divisors is an integer number (23872860).

Almost surely, 2^222466538 is an apocalyptic number.

222466538 is a deficient number, since it is larger than the sum of its proper divisors (159499222).

222466538 is a wasteful number, since it uses less digits than its factorization.

222466538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24781.

The product of its digits is 138240, while the sum is 38.

The square root of 222466538 is about 14915.3121992133. The cubic root of 222466538 is about 605.9287585943.

The spelling of 222466538 in words is "two hundred twenty-two million, four hundred sixty-six thousand, five hundred thirty-eight".