222642154 has 16 divisors (see below), whose sum is σ = 383097600. Its totient is φ = 95061744.

The previous prime is 222642151. The next prime is 222642163. The reversal of 222642154 is 451246222.

It is not an unprimeable number, because it can be changed into a prime (222642151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25794 + ... + 33325.

It is an arithmetic number, because the mean of its divisors is an integer number (23943600).

Almost surely, 2^222642154 is an apocalyptic number.

222642154 is a deficient number, since it is larger than the sum of its proper divisors (160455446).

222642154 is a wasteful number, since it uses less digits than its factorization.

222642154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59397.

The product of its digits is 7680, while the sum is 28.

The square root of 222642154 is about 14921.1981422405. The cubic root of 222642154 is about 606.0881575429.

Adding to 222642154 its reverse (451246222), we get a palindrome (673888376).

The spelling of 222642154 in words is "two hundred twenty-two million, six hundred forty-two thousand, one hundred fifty-four".