22160018 has 4 divisors (see below), whose sum is σ = 33240030. Its totient is φ = 11080008.

The previous prime is 22159981. The next prime is 22160041. The reversal of 22160018 is 81006122.

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., 20912329 + 1247689 = 4573^2 + 1117^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5540003 + ... + 5540006.

Almost surely, 2^22160018 is an apocalyptic number.

22160018 is a deficient number, since it is larger than the sum of its proper divisors (11080012).

22160018 is a wasteful number, since it uses less digits than its factorization.

22160018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11080011.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 22160018 is about 4707.4428302423. The cubic root of 22160018 is about 280.8816512550.

The spelling of 22160018 in words is "twenty-two million, one hundred sixty thousand, eighteen".