20503441 has 8 divisors (see below), whose sum is σ = 23569344. Its totient is φ = 17471760.

The previous prime is 20503433. The next prime is 20503453. The reversal of 20503441 is 14430502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20503441 - 2³ = 20503433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20503481) 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 7 ways as a sum of consecutive naturals, for example, 7255 + ... + 9676.

It is an arithmetic number, because the mean of its divisors is an integer number (2946168).

Almost surely, 2^20503441 is an apocalyptic number.

It is an amenable number.

20503441 is a deficient number, since it is larger than the sum of its proper divisors (3065903).

20503441 is a wasteful number, since it uses less digits than its factorization.

20503441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17111.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 20503441 is about 4528.0725480054. The cubic root of 20503441 is about 273.7004959030.

Adding to 20503441 its reverse (14430502), we get a palindrome (34933943).

The spelling of 20503441 in words is "twenty million, five hundred three thousand, four hundred forty-one".