20344443 has 32 divisors (see below), whose sum is σ = 32848896. Its totient is φ = 10948608.

The previous prime is 20344433. The next prime is 20344447. The reversal of 20344443 is 34444302.

It is a happy number.

It is not a de Polignac number, because 20344443 - 2⁸ = 20344187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20344447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34971 + ... + 35547.

It is an arithmetic number, because the mean of its divisors is an integer number (1026528).

Almost surely, 2^20344443 is an apocalyptic number.

20344443 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20344443 is a deficient number, since it is larger than the sum of its proper divisors (12504453).

20344443 is a wasteful number, since it uses less digits than its factorization.

20344443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683.

The product of its (nonzero) digits is 4608, while the sum is 24.

The square root of 20344443 is about 4510.4814598887. The cubic root of 20344443 is about 272.9911709364.

Adding to 20344443 its reverse (34444302), we get a palindrome (54788745).

The spelling of 20344443 in words is "twenty million, three hundred forty-four thousand, four hundred forty-three".