22166368 has 48 divisors (see below), whose sum is σ = 52817184. Its totient is φ = 8939520.

The previous prime is 22166341. The next prime is 22166381. The reversal of 22166368 is 86366122.

It is a happy number.

It is a super-2 number, since 2×22166368² = 982695740622848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 898 + ... + 6718.

It is an arithmetic number, because the mean of its divisors is an integer number (1100358).

Almost surely, 2^22166368 is an apocalyptic number.

22166368 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22166368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26408592).

22166368 is an abundant number, since it is smaller than the sum of its proper divisors (30650816).

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

22166368 is a wasteful number, since it uses less digits than its factorization.

22166368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5855 (or 5847 counting only the distinct ones).

The product of its digits is 20736, while the sum is 34.

The square root of 22166368 is about 4708.1172457788. The cubic root of 22166368 is about 280.9084777697.

The spelling of 22166368 in words is "twenty-two million, one hundred sixty-six thousand, three hundred sixty-eight".