20480003 has 4 divisors (see below), whose sum is σ = 21186240. Its totient is φ = 19773768.

The previous prime is 20479999. The next prime is 20480011. The reversal of 20480003 is 30008402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20480003 - 2² = 20479999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20480503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353075 + ... + 353132.

It is an arithmetic number, because the mean of its divisors is an integer number (5296560).

Almost surely, 2^20480003 is an apocalyptic number.

20480003 is a deficient number, since it is larger than the sum of its proper divisors (706237).

20480003 is an equidigital number, since it uses as much as digits as its factorization.

20480003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706236.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 20480003 is about 4525.4837310502. The cubic root of 20480003 is about 273.5961648275.

Adding to 20480003 its reverse (30008402), we get a palindrome (50488405).

The spelling of 20480003 in words is "twenty million, four hundred eighty thousand, three".