20343844 has 12 divisors (see below), whose sum is σ = 35762944. Its totient is φ = 10125864.

The previous prime is 20343833. The next prime is 20343847. The reversal of 20343844 is 44834302.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (20343847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10512 + ... + 12295.

Almost surely, 2^20343844 is an apocalyptic number.

It is an amenable number.

20343844 is a deficient number, since it is larger than the sum of its proper divisors (15419100).

20343844 is a wasteful number, since it uses less digits than its factorization.

20343844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23034 (or 23032 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 20343844 is about 4510.4150585063. The cubic root of 20343844 is about 272.9884916902.

The spelling of 20343844 in words is "twenty million, three hundred forty-three thousand, eight hundred forty-four".