22018016 has 12 divisors (see below), whose sum is σ = 43348032. Its totient is φ = 11008992.

The previous prime is 22017973. The next prime is 22018037. The reversal of 22018016 is 61081022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344000 + ... + 344063.

It is an arithmetic number, because the mean of its divisors is an integer number (3612336).

Almost surely, 2^22018016 is an apocalyptic number.

It is an amenable number.

22018016 is a deficient number, since it is larger than the sum of its proper divisors (21330016).

22018016 is an equidigital number, since it uses as much as digits as its factorization.

22018016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688073 (or 688065 counting only the distinct ones).

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

The square root of 22018016 is about 4692.3358788561. The cubic root of 22018016 is about 280.2803993790.

Adding to 22018016 its reverse (61081022), we get a palindrome (83099038).

It can be divided in two parts, 220 and 18016, that multiplied together give a triangular number (3963520 = T₂₈₁₅).

The spelling of 22018016 in words is "twenty-two million, eighteen thousand, sixteen".