22118385 has 8 divisors (see below), whose sum is σ = 35389440. Its totient is φ = 11796464.

The previous prime is 22118363. The next prime is 22118399. The reversal of 22118385 is 58381122.

22118385 = 1100² + 1101² + ... + 1117².

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

It is a cyclic number.

It is not a de Polignac number, because 22118385 - 2⁹ = 22117873 is a prime.

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, 737265 + ... + 737294.

It is an arithmetic number, because the mean of its divisors is an integer number (4423680).

Almost surely, 2^22118385 is an apocalyptic number.

It is an amenable number.

22118385 is a deficient number, since it is larger than the sum of its proper divisors (13271055).

22118385 is a wasteful number, since it uses less digits than its factorization.

22118385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1474567.

The product of its digits is 3840, while the sum is 30.

The square root of 22118385 is about 4703.0187114235. The cubic root of 22118385 is about 280.7056394132.

The spelling of 22118385 in words is "twenty-two million, one hundred eighteen thousand, three hundred eighty-five".