22271438 has 24 divisors (see below), whose sum is σ = 38922672. Its totient is φ = 9362592.

The previous prime is 22271407. The next prime is 22271489. The reversal of 22271438 is 83417222.

It is a self number, because there is not a number n which added to its sum of digits gives 22271438.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48506 + ... + 48962.

It is an arithmetic number, because the mean of its divisors is an integer number (1621778).

Almost surely, 2^22271438 is an apocalyptic number.

22271438 is a deficient number, since it is larger than the sum of its proper divisors (16651234).

22271438 is an equidigital number, since it uses as much as digits as its factorization.

22271438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584 (or 525 counting only the distinct ones).

The product of its digits is 5376, while the sum is 29.

The square root of 22271438 is about 4719.2624423738. The cubic root of 22271438 is about 281.3516197069.

The spelling of 22271438 in words is "twenty-two million, two hundred seventy-one thousand, four hundred thirty-eight".