20394844 has 12 divisors (see below), whose sum is σ = 36655864. Its totient is φ = 9921744.

The previous prime is 20394841. The next prime is 20394863. The reversal of 20394844 is 44849302.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20394841) 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, 68754 + ... + 69049.

Almost surely, 2^20394844 is an apocalyptic number.

It is an amenable number.

20394844 is a deficient number, since it is larger than the sum of its proper divisors (16261020).

20394844 is a wasteful number, since it uses less digits than its factorization.

20394844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137844 (or 137842 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 20394844 is about 4516.0651013908. The cubic root of 20394844 is about 273.2164196933.

The spelling of 20394844 in words is "twenty million, three hundred ninety-four thousand, eight hundred forty-four".