22037218 has 16 divisors (see below), whose sum is σ = 38997504. Its totient is φ = 9139680.

The previous prime is 22037209. The next prime is 22037221. The reversal of 22037218 is 81273022.

It is a junction number, because it is equal to n+sod(n) for n = 22037192 and 22037201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24955 + ... + 25822.

It is an arithmetic number, because the mean of its divisors is an integer number (2437344).

Almost surely, 2^22037218 is an apocalyptic number.

22037218 is a deficient number, since it is larger than the sum of its proper divisors (16960286).

22037218 is a wasteful number, since it uses less digits than its factorization.

22037218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50817.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 22037218 is about 4694.3815354102. The cubic root of 22037218 is about 280.3618535913.

The spelling of 22037218 in words is "twenty-two million, thirty-seven thousand, two hundred eighteen".