20344401 has 48 divisors (see below), whose sum is σ = 37859328. Its totient is φ = 10216800.

The previous prime is 20344369. The next prime is 20344403. The reversal of 20344401 is 10444302.

It is not a de Polignac number, because 20344401 - 2⁵ = 20344369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20344403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21010 + ... + 21956.

It is an arithmetic number, because the mean of its divisors is an integer number (788736).

Almost surely, 2^20344401 is an apocalyptic number.

20344401 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20344401 is a deficient number, since it is larger than the sum of its proper divisors (17514927).

20344401 is a wasteful number, since it uses less digits than its factorization.

20344401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002 (or 999 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 20344401 is about 4510.4768040641. The cubic root of 20344401 is about 272.9909830778.

Adding to 20344401 its reverse (10444302), we get a palindrome (30788703).

Subtracting from 20344401 its reverse (10444302), we obtain a palindrome (9900099).

The spelling of 20344401 in words is "twenty million, three hundred forty-four thousand, four hundred one".