22331394 has 24 divisors (see below), whose sum is σ = 48471852. Its totient is φ = 7430400.

The previous prime is 22331371. The next prime is 22331401. The reversal of 22331394 is 49313322.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 22212369 + 119025 = 4713^2 + 345^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17994 + ... + 19194.

Almost surely, 2^22331394 is an apocalyptic number.

22331394 is an abundant number, since it is smaller than the sum of its proper divisors (26140458).

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

22331394 is a wasteful number, since it uses less digits than its factorization.

22331394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2242 (or 2239 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

The square root of 22331394 is about 4725.6104367584. The cubic root of 22331394 is about 281.6038651033.

The spelling of 22331394 in words is "twenty-two million, three hundred thirty-one thousand, three hundred ninety-four".