22638079 has 4 divisors (see below), whose sum is σ = 22657320. Its totient is φ = 22618840.

The previous prime is 22638037. The next prime is 22638107. The reversal of 22638079 is 97083622.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22638079 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 (22638479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7732 + ... + 10249.

It is an arithmetic number, because the mean of its divisors is an integer number (5664330).

Almost surely, 2^22638079 is an apocalyptic number.

22638079 is a deficient number, since it is larger than the sum of its proper divisors (19241).

22638079 is a wasteful number, since it uses less digits than its factorization.

22638079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19240.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 22638079 is about 4757.9490329343. The cubic root of 22638079 is about 282.8871305072.

The spelling of 22638079 in words is "twenty-two million, six hundred thirty-eight thousand, seventy-nine".