22018164 has 24 divisors (see below), whose sum is σ = 58715328. Its totient is φ = 6290880.

The previous prime is 22018147. The next prime is 22018181. The reversal of 22018164 is 46181022.

It is an interprime number because it is at equal distance from previous prime (22018147) and next prime (22018181).

It is a congruent number.

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, 130977 + ... + 131144.

It is an arithmetic number, because the mean of its divisors is an integer number (2446472).

Almost surely, 2^22018164 is an apocalyptic number.

It is an amenable number.

22018164 is an abundant number, since it is smaller than the sum of its proper divisors (36697164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22018164 is a wasteful number, since it uses less digits than its factorization.

22018164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262135 (or 262133 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 22018164 is about 4692.3516492266. The cubic root of 22018164 is about 280.2810273709.

Adding to 22018164 its reverse (46181022), we get a palindrome (68199186).

The spelling of 22018164 in words is "twenty-two million, eighteen thousand, one hundred sixty-four".