20333441 has 6 divisors (see below), whose sum is σ = 20481942. Its totient is φ = 20185760.

The previous prime is 20333407. The next prime is 20333459. The reversal of 20333441 is 14433302.

It can be written as a sum of positive squares in 3 ways, for example, as 38416 + 20295025 = 196^2 + 4505^2 .

It is not a de Polignac number, because 20333441 - 2¹⁸ = 20071297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20333041) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72221 + ... + 72501.

It is an arithmetic number, because the mean of its divisors is an integer number (3413657).

Almost surely, 2^20333441 is an apocalyptic number.

It is an amenable number.

20333441 is a deficient number, since it is larger than the sum of its proper divisors (148501).

20333441 is an frugal number, since it uses more digits than its factorization.

20333441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819 (or 550 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 20333441 is about 4509.2616912306. The cubic root of 20333441 is about 272.9419520836.

Adding to 20333441 its reverse (14433302), we get a palindrome (34766743).

The spelling of 20333441 in words is "twenty million, three hundred thirty-three thousand, four hundred forty-one".