222458138 has 32 divisors (see below), whose sum is σ = 390528000. Its totient is φ = 94999632.

The previous prime is 222458069. The next prime is 222458147. The reversal of 222458138 is 831854222.

It is a junction number, because it is equal to n+sod(n) for n = 222458098 and 222458107.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 328256 + ... + 328932.

It is an arithmetic number, because the mean of its divisors is an integer number (12204000).

Almost surely, 2^222458138 is an apocalyptic number.

222458138 is a deficient number, since it is larger than the sum of its proper divisors (168069862).

222458138 is an equidigital number, since it uses as much as digits as its factorization.

222458138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179 (or 1165 counting only the distinct ones).

The product of its digits is 30720, while the sum is 35.

The square root of 222458138 is about 14915.0306067403. The cubic root of 222458138 is about 605.9211321805.

The spelling of 222458138 in words is "two hundred twenty-two million, four hundred fifty-eight thousand, one hundred thirty-eight".