21968095 has 8 divisors (see below), whose sum is σ = 26406576. Its totient is φ = 17544576.

The previous prime is 21968077. The next prime is 21968099. The reversal of 21968095 is 59086912.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21968095 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21968099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202 + ... + 6631.

It is an arithmetic number, because the mean of its divisors is an integer number (3300822).

Almost surely, 2^21968095 is an apocalyptic number.

21968095 is a deficient number, since it is larger than the sum of its proper divisors (4438481).

21968095 is an equidigital number, since it uses as much as digits as its factorization.

21968095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7481.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 21968095 is about 4687.0134414145. The cubic root of 21968095 is about 280.0684144049.

The spelling of 21968095 in words is "twenty-one million, nine hundred sixty-eight thousand, ninety-five".