22231639 has 8 divisors (see below), whose sum is σ = 23517792. Its totient is φ = 20972160.

The previous prime is 22231637. The next prime is 22231667. The reversal of 22231639 is 93613222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22231639 - 2¹ = 22231637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22231637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4942 + ... + 8299.

It is an arithmetic number, because the mean of its divisors is an integer number (2939724).

Almost surely, 2^22231639 is an apocalyptic number.

22231639 is a deficient number, since it is larger than the sum of its proper divisors (1286153).

22231639 is a wasteful number, since it uses less digits than its factorization.

22231639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13337.

The product of its digits is 3888, while the sum is 28.

The square root of 22231639 is about 4715.0439022346. The cubic root of 22231639 is about 281.1839282491.

The spelling of 22231639 in words is "twenty-two million, two hundred thirty-one thousand, six hundred thirty-nine".