22222026 has 40 divisors (see below), whose sum is σ = 52729380. Its totient is φ = 6970752.

The previous prime is 22221977. The next prime is 22222049. The reversal of 22222026 is 62022222.

It can be written as a sum of positive squares in 2 ways, for example, as 21150801 + 1071225 = 4599^2 + 1035^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1281 + ... + 6788.

Almost surely, 2^22222026 is an apocalyptic number.

22222026 is an abundant number, since it is smaller than the sum of its proper divisors (30507354).

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

22222026 is a wasteful number, since it uses less digits than its factorization.

22222026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8100 (or 8091 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 22222026 is about 4714.0243953548. The cubic root of 22222026 is about 281.1433942637.

Adding to 22222026 its reverse (62022222), we get a palindrome (84244248).

The spelling of 22222026 in words is "twenty-two million, two hundred twenty-two thousand, twenty-six".