222222426 has 16 divisors (see below), whose sum is σ = 444654624. Its totient is φ = 74039184.

The previous prime is 222222401. The next prime is 222222431. The reversal of 222222426 is 624222222.

It is a junction number, because it is equal to n+sod(n) for n = 222222396 and 222222405.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7296 + ... + 22308.

It is an arithmetic number, because the mean of its divisors is an integer number (27790914).

Almost surely, 2^222222426 is an apocalyptic number.

222222426 is an abundant number, since it is smaller than the sum of its proper divisors (222432198).

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

222222426 is a wasteful number, since it uses less digits than its factorization.

222222426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17485.

The product of its digits is 3072, while the sum is 24.

The square root of 222222426 is about 14907.1266849115. The cubic root of 222222426 is about 605.7070494217.

Adding to 222222426 its reverse (624222222), we get a palindrome (846444648).

The spelling of 222222426 in words is "two hundred twenty-two million, two hundred twenty-two thousand, four hundred twenty-six".