22347639 has 12 divisors (see below), whose sum is σ = 34178976. Its totient is φ = 14021952.

The previous prime is 22347623. The next prime is 22347641. The reversal of 22347639 is 93674322.

It is a happy number.

It is not a de Polignac number, because 22347639 - 2⁴ = 22347623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22347739) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72879 + ... + 73184.

It is an arithmetic number, because the mean of its divisors is an integer number (2848248).

Almost surely, 2^22347639 is an apocalyptic number.

22347639 is a deficient number, since it is larger than the sum of its proper divisors (11831337).

22347639 is a wasteful number, since it uses less digits than its factorization.

22347639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146086 (or 146083 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 22347639 is about 4727.3289498405. The cubic root of 22347639 is about 281.6721329114.

The spelling of 22347639 in words is "twenty-two million, three hundred forty-seven thousand, six hundred thirty-nine".