20968844 has 18 divisors (see below), whose sum is σ = 39736620. Its totient is φ = 9677616.

The previous prime is 20968841. The next prime is 20968853. The reversal of 20968844 is 44886902.

It is not an unprimeable number, because it can be changed into a prime (20968841) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14834 + ... + 16185.

It is an arithmetic number, because the mean of its divisors is an integer number (2207590).

Almost surely, 2^20968844 is an apocalyptic number.

It is an amenable number.

20968844 is a deficient number, since it is larger than the sum of its proper divisors (18767776).

20968844 is a wasteful number, since it uses less digits than its factorization.

20968844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31049 (or 31034 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 41.

The square root of 20968844 is about 4579.1750348725. The cubic root of 20968844 is about 275.7559103589.

It can be divided in two parts, 20968 and 844, that added together give a palindrome (21812).

The spelling of 20968844 in words is "twenty million, nine hundred sixty-eight thousand, eight hundred forty-four".