20440113 has 4 divisors (see below), whose sum is σ = 27253488. Its totient is φ = 13626740.

The previous prime is 20440111. The next prime is 20440151. The reversal of 20440113 is 31104402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20440113 - 2¹ = 20440111 is a prime.

It is a zygodrome in base 7.

It is a junction number, because it is equal to n+sod(n) for n = 20440092 and 20440101.

It is not an unprimeable number, because it can be changed into a prime (20440111) 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 3 ways as a sum of consecutive naturals, for example, 3406683 + ... + 3406688.

It is an arithmetic number, because the mean of its divisors is an integer number (6813372).

Almost surely, 2^20440113 is an apocalyptic number.

It is an amenable number.

20440113 is a deficient number, since it is larger than the sum of its proper divisors (6813375).

20440113 is an equidigital number, since it uses as much as digits as its factorization.

20440113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6813374.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 20440113 is about 4521.0743192299. The cubic root of 20440113 is about 273.4184167341.

Adding to 20440113 its reverse (31104402), we get a palindrome (51544515).

The spelling of 20440113 in words is "twenty million, four hundred forty thousand, one hundred thirteen".