22065408 has 108 divisors (see below), whose sum is σ = 65074828. Its totient is φ = 7188480.

The previous prime is 22065389. The next prime is 22065443. The reversal of 22065408 is 80456022.

22065408 is a `hidden beast` number, since 2 + 2 + 0 + 654 + 0 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2985984 + 19079424 = 1728^2 + 4368^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 140466 + ... + 140622.

Almost surely, 2^22065408 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 22065408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32537414).

22065408 is an abundant number, since it is smaller than the sum of its proper divisors (43009420).

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

22065408 is a wasteful number, since it uses less digits than its factorization.

22065408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240 (or 223 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 22065408 is about 4697.3831012597. The cubic root of 22065408 is about 280.4813489081.

The spelling of 22065408 in words is "twenty-two million, sixty-five thousand, four hundred eight".