22318016 has 56 divisors (see below), whose sum is σ = 52279296. Its totient is φ = 9250560.

The previous prime is 22318013. The next prime is 22318099. The reversal of 22318016 is 61081322.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-3 number, since 3×22318016³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22317982 and 22318000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22318013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13085 + ... + 14691.

Almost surely, 2^22318016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22318016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26139648).

22318016 is an abundant number, since it is smaller than the sum of its proper divisors (29961280).

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

22318016 is a wasteful number, since it uses less digits than its factorization.

22318016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1657 (or 1647 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 22318016 is about 4724.1947461975. The cubic root of 22318016 is about 281.5476206813.

Adding to 22318016 its reverse (61081322), we get a palindrome (83399338).

The spelling of 22318016 in words is "twenty-two million, three hundred eighteen thousand, sixteen".