22642266 has 32 divisors (see below), whose sum is σ = 48323520. Its totient is φ = 7047936.

The previous prime is 22642259. The next prime is 22642267. The reversal of 22642266 is 66224622.

It is a super-2 number, since 2×22642266² = 1025344419229512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22642267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13380 + ... + 14976.

It is an arithmetic number, because the mean of its divisors is an integer number (1510110).

Almost surely, 2^22642266 is an apocalyptic number.

22642266 is an abundant number, since it is smaller than the sum of its proper divisors (25681254).

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

22642266 is a wasteful number, since it uses less digits than its factorization.

22642266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1758.

The product of its digits is 13824, while the sum is 30.

The square root of 22642266 is about 4758.3890131010. The cubic root of 22642266 is about 282.9045697873.

Adding to 22642266 its reverse (66224622), we get a palindrome (88866888).

The spelling of 22642266 in words is "twenty-two million, six hundred forty-two thousand, two hundred sixty-six".