20411401 has 4 divisors (see below), whose sum is σ = 20440900. Its totient is φ = 20381904.

The previous prime is 20411387. The next prime is 20411411. The reversal of 20411401 is 10411402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10411402 = 2 ⋅5205701.

It can be written as a sum of positive squares in 2 ways, for example, as 10394176 + 10017225 = 3224^2 + 3165^2 .

It is a cyclic number.

It is not a de Polignac number, because 20411401 - 2¹¹ = 20409353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20411411) 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, 13686 + ... + 15103.

It is an arithmetic number, because the mean of its divisors is an integer number (5110225).

Almost surely, 2^20411401 is an apocalyptic number.

It is an amenable number.

20411401 is a deficient number, since it is larger than the sum of its proper divisors (29499).

20411401 is an equidigital number, since it uses as much as digits as its factorization.

20411401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29498.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 20411401 is about 4517.8978518776. The cubic root of 20411401 is about 273.2903341376.

Adding to 20411401 its reverse (10411402), we get a palindrome (30822803).

Subtracting from 20411401 its reverse (10411402), we obtain a palindrome (9999999).

The spelling of 20411401 in words is "twenty million, four hundred eleven thousand, four hundred one".