22139267 has 4 divisors (see below), whose sum is σ = 22902720. Its totient is φ = 21375816.

The previous prime is 22139261. The next prime is 22139269. The reversal of 22139267 is 76293122.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76293122 = 2 ⋅38146561.

It is a cyclic number.

It is not a de Polignac number, because 22139267 - 2⁶ = 22139203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22139261) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 381683 + ... + 381740.

It is an arithmetic number, because the mean of its divisors is an integer number (5725680).

Almost surely, 2^22139267 is an apocalyptic number.

22139267 is a deficient number, since it is larger than the sum of its proper divisors (763453).

22139267 is an equidigital number, since it uses as much as digits as its factorization.

22139267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763452.

The product of its digits is 9072, while the sum is 32.

The square root of 22139267 is about 4705.2382511410. The cubic root of 22139267 is about 280.7939498308.

The spelling of 22139267 in words is "twenty-two million, one hundred thirty-nine thousand, two hundred sixty-seven".