20950844 has 12 divisors (see below), whose sum is σ = 38593800. Its totient is φ = 9924048.

The previous prime is 20950837. The next prime is 20950849. The reversal of 20950844 is 44805902.

It is a self number, because there is not a number n which added to its sum of digits gives 20950844.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20950849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137759 + ... + 137910.

It is an arithmetic number, because the mean of its divisors is an integer number (3216150).

Almost surely, 2^20950844 is an apocalyptic number.

It is an amenable number.

20950844 is a deficient number, since it is larger than the sum of its proper divisors (17642956).

20950844 is a wasteful number, since it uses less digits than its factorization.

20950844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275692 (or 275690 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 20950844 is about 4577.2091933841. The cubic root of 20950844 is about 275.6769833034.

The spelling of 20950844 in words is "twenty million, nine hundred fifty thousand, eight hundred forty-four".