22378668 has 48 divisors (see below), whose sum is σ = 56636160. Its totient is φ = 6836544.

The previous prime is 22378651. The next prime is 22378679. The reversal of 22378668 is 86687322.

It is a plaindrome in base 16.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25623 + ... + 26481.

It is an arithmetic number, because the mean of its divisors is an integer number (1179920).

Almost surely, 2^22378668 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 22378668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28318080).

22378668 is an abundant number, since it is smaller than the sum of its proper divisors (34257492).

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

22378668 is a wasteful number, since it uses less digits than its factorization.

22378668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1046 (or 1044 counting only the distinct ones).

The product of its digits is 193536, while the sum is 42.

The square root of 22378668 is about 4730.6096858650. The cubic root of 22378668 is about 281.8024369471.

The spelling of 22378668 in words is "twenty-two million, three hundred seventy-eight thousand, six hundred sixty-eight".