22242379 has 4 divisors (see below), whose sum is σ = 22259160. Its totient is φ = 22225600.

The previous prime is 22242343. The next prime is 22242397. The reversal of 22242379 is 97324222.

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

It is a cyclic number.

It is not a de Polignac number, because 22242379 - 2⁷ = 22242251 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22242379.

It is not an unprimeable number, because it can be changed into a prime (22242329) 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, 6214 + ... + 9115.

It is an arithmetic number, because the mean of its divisors is an integer number (5564790).

Almost surely, 2^22242379 is an apocalyptic number.

22242379 is a deficient number, since it is larger than the sum of its proper divisors (16781).

22242379 is a wasteful number, since it uses less digits than its factorization.

22242379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16780.

The product of its digits is 12096, while the sum is 31.

The square root of 22242379 is about 4716.1826724587. The cubic root of 22242379 is about 281.2292005030.

The spelling of 22242379 in words is "twenty-two million, two hundred forty-two thousand, three hundred seventy-nine".