20440204 has 12 divisors (see below), whose sum is σ = 35802144. Its totient is φ = 10211024.

The previous prime is 20440201. The next prime is 20440207. The reversal of 20440204 is 40204402.

It is an interprime number because it is at equal distance from previous prime (20440201) and next prime (20440207).

It is not an unprimeable number, because it can be changed into a prime (20440201) 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, 7014 + ... + 9490.

It is an arithmetic number, because the mean of its divisors is an integer number (2983512).

Almost surely, 2^20440204 is an apocalyptic number.

It is an amenable number.

20440204 is a deficient number, since it is larger than the sum of its proper divisors (15361940).

20440204 is a wasteful number, since it uses less digits than its factorization.

20440204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4544 (or 4542 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 20440204 is about 4521.0843831983. The cubic root of 20440204 is about 273.4188224891.

Adding to 20440204 its reverse (40204402), we get a palindrome (60644606).

The spelling of 20440204 in words is "twenty million, four hundred forty thousand, two hundred four".