22116456 has 128 divisors (see below), whose sum is σ = 68688000. Its totient is φ = 6552576.

The previous prime is 22116443. The next prime is 22116481. The reversal of 22116456 is 65461122.

22116456 is a `hidden beast` number, since 2 + 2 + 11 + 645 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 31 ways as a sum of consecutive naturals, for example, 69610 + ... + 69926.

It is an arithmetic number, because the mean of its divisors is an integer number (536625).

Almost surely, 2^22116456 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 22116456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34344000).

22116456 is an abundant number, since it is smaller than the sum of its proper divisors (46571544).

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

22116456 is a wasteful number, since it uses less digits than its factorization.

22116456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368 (or 358 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 22116456 is about 4702.8136259052. The cubic root of 22116456 is about 280.6974788276.

Adding to 22116456 its reverse (65461122), we get a palindrome (87577578).

The spelling of 22116456 in words is "twenty-two million, one hundred sixteen thousand, four hundred fifty-six".