20968443 has 16 divisors (see below), whose sum is σ = 31652640. Its totient is φ = 13714272.

The previous prime is 20968427. The next prime is 20968481. The reversal of 20968443 is 34486902.

It is a happy number.

20968443 is a `hidden beast` number, since 209 + 6 + 8 + 443 = 666.

It is not a de Polignac number, because 20968443 - 2⁴ = 20968427 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 20968398 and 20968407.

It is not an unprimeable number, because it can be changed into a prime (20968403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5896 + ... + 8757.

It is an arithmetic number, because the mean of its divisors is an integer number (1978290).

Almost surely, 2^20968443 is an apocalyptic number.

20968443 is a deficient number, since it is larger than the sum of its proper divisors (10684197).

20968443 is a wasteful number, since it uses less digits than its factorization.

20968443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14715 (or 14709 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 20968443 is about 4579.1312494839. The cubic root of 20968443 is about 275.7541525315.

The spelling of 20968443 in words is "twenty million, nine hundred sixty-eight thousand, four hundred forty-three".