21968714 has 8 divisors (see below), whose sum is σ = 33212928. Its totient is φ = 10897740.

The previous prime is 21968711. The next prime is 21968717. The reversal of 21968714 is 41786912.

It is an interprime number because it is at equal distance from previous prime (21968711) and next prime (21968717).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (21968711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42992 + ... + 43499.

It is an arithmetic number, because the mean of its divisors is an integer number (4151616).

Almost surely, 2^21968714 is an apocalyptic number.

21968714 is a deficient number, since it is larger than the sum of its proper divisors (11244214).

21968714 is a wasteful number, since it uses less digits than its factorization.

21968714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86620.

The product of its digits is 24192, while the sum is 38.

The square root of 21968714 is about 4687.0794744702. The cubic root of 21968714 is about 280.0710448973.

The spelling of 21968714 in words is "twenty-one million, nine hundred sixty-eight thousand, seven hundred fourteen".