21794968 has 16 divisors (see below), whose sum is σ = 44009280. Its totient is φ = 10059168.

The previous prime is 21794947. The next prime is 21794977. The reversal of 21794968 is 86949712.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104680 + ... + 104887.

It is an arithmetic number, because the mean of its divisors is an integer number (2750580).

Almost surely, 2^21794968 is an apocalyptic number.

It is an amenable number.

21794968 is an abundant number, since it is smaller than the sum of its proper divisors (22214312).

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

21794968 is a wasteful number, since it uses less digits than its factorization.

21794968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209586 (or 209582 counting only the distinct ones).

The product of its digits is 217728, while the sum is 46.

The square root of 21794968 is about 4668.5081128772. The cubic root of 21794968 is about 279.3307485794.

The spelling of 21794968 in words is "twenty-one million, seven hundred ninety-four thousand, nine hundred sixty-eight".