20043401 has 12 divisors (see below), whose sum is σ = 23561748. Its totient is φ = 16998912.

The previous prime is 20043343. The next prime is 20043403. The reversal of 20043401 is 10434002.

It can be written as a sum of positive squares in 2 ways, for example, as 13868176 + 6175225 = 3724^2 + 2485^2 .

It is not a de Polignac number, because 20043401 - 2⁶ = 20043337 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20043403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2645 + ... + 6861.

It is an arithmetic number, because the mean of its divisors is an integer number (1963479).

Almost surely, 2^20043401 is an apocalyptic number.

It is an amenable number.

20043401 is a deficient number, since it is larger than the sum of its proper divisors (3518347).

20043401 is an equidigital number, since it uses as much as digits as its factorization.

20043401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4328 (or 4321 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 20043401 is about 4476.9857046902. The cubic root of 20043401 is about 271.6379672009.

Adding to 20043401 its reverse (10434002), we get a palindrome (30477403).

The spelling of 20043401 in words is "twenty million, forty-three thousand, four hundred one".