22739638 has 8 divisors (see below), whose sum is σ = 34151832. Its totient is φ = 11355696.

The previous prime is 22739611. The next prime is 22739657. The reversal of 22739638 is 83693722.

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

It is a super-2 number, since 2×22739638² = 1034182272742088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22739638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4920 + ... + 8347.

It is an arithmetic number, because the mean of its divisors is an integer number (4268979).

Almost surely, 2^22739638 is an apocalyptic number.

22739638 is a deficient number, since it is larger than the sum of its proper divisors (11412194).

22739638 is a wasteful number, since it uses less digits than its factorization.

22739638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14126.

The product of its digits is 108864, while the sum is 40.

The square root of 22739638 is about 4768.6096506214. The cubic root of 22739638 is about 283.3095291036.

It can be divided in two parts, 2273 and 9638, that added together give a palindrome (11911).

The spelling of 22739638 in words is "twenty-two million, seven hundred thirty-nine thousand, six hundred thirty-eight".