22143818 has 8 divisors (see below), whose sum is σ = 33251040. Its totient is φ = 11060140.

The previous prime is 22143799. The next prime is 22143829. The reversal of 22143818 is 81834122.

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

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, 3308 + ... + 7431.

It is an arithmetic number, because the mean of its divisors is an integer number (4156380).

Almost surely, 2^22143818 is an apocalyptic number.

22143818 is a deficient number, since it is larger than the sum of its proper divisors (11107222).

22143818 is a wasteful number, since it uses less digits than its factorization.

22143818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11772.

The product of its digits is 3072, while the sum is 29.

The square root of 22143818 is about 4705.7218362330. The cubic root of 22143818 is about 280.8131887351.

The spelling of 22143818 in words is "twenty-two million, one hundred forty-three thousand, eight hundred eighteen".