22792018 has 4 divisors (see below), whose sum is σ = 34188030. Its totient is φ = 11396008.

The previous prime is 22792013. The next prime is 22792027. The reversal of 22792018 is 81029722.

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

It can be written as a sum of positive squares in only one way, i.e., 14341369 + 8450649 = 3787^2 + 2907^2 .

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 not an unprimeable number, because it can be changed into a prime (22792013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5698003 + ... + 5698006.

Almost surely, 2^22792018 is an apocalyptic number.

22792018 is a deficient number, since it is larger than the sum of its proper divisors (11396012).

22792018 is a wasteful number, since it uses less digits than its factorization.

22792018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11396011.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 22792018 is about 4774.0986583857. The cubic root of 22792018 is about 283.5268936515.

The spelling of 22792018 in words is "twenty-two million, seven hundred ninety-two thousand, eighteen".