222738458 has 4 divisors (see below), whose sum is σ = 334107690. Its totient is φ = 111369228.

The previous prime is 222738457. The next prime is 222738469. The reversal of 222738458 is 854837222.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 191075329 + 31663129 = 13823^2 + 5627^2 .

It is a super-2 number, since 2×222738458² = 99224841344435528, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (222738457) 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 as a sum of consecutive naturals, namely, 55684613 + ... + 55684616.

Almost surely, 2^222738458 is an apocalyptic number.

222738458 is a deficient number, since it is larger than the sum of its proper divisors (111369232).

222738458 is a wasteful number, since it uses less digits than its factorization.

222738458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111369231.

The product of its digits is 215040, while the sum is 41.

The square root of 222738458 is about 14924.4248800414. The cubic root of 222738458 is about 606.1755328805.

The spelling of 222738458 in words is "two hundred twenty-two million, seven hundred thirty-eight thousand, four hundred fifty-eight".