20441330 has 48 divisors (see below), whose sum is σ = 46108440. Its totient is φ = 6467328.

The previous prime is 20441269. The next prime is 20441347. The reversal of 20441330 is 3314402.

It can be written as a sum of positive squares in 4 ways, for example, as 13402921 + 7038409 = 3661^2 + 2653^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20441299 and 20441308.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4766 + ... + 7974.

Almost surely, 2^20441330 is an apocalyptic number.

20441330 is an abundant number, since it is smaller than the sum of its proper divisors (25667110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20441330 is a wasteful number, since it uses less digits than its factorization.

20441330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3243 (or 3236 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 20441330 is about 4521.2089091304. The cubic root of 20441330 is about 273.4238430512.

Adding to 20441330 its reverse (3314402), we get a palindrome (23755732).

The spelling of 20441330 in words is "twenty million, four hundred forty-one thousand, three hundred thirty".