20288003 has 2 divisors, whose sum is σ = 20288004. Its totient is φ = 20288002.

The previous prime is 20287999. The next prime is 20288017. The reversal of 20288003 is 30088202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20288003 - 2² = 20287999 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20288003.

It is not a weakly prime, because it can be changed into another prime (20288033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10144001 + 10144002.

It is an arithmetic number, because the mean of its divisors is an integer number (10144002).

Almost surely, 2^20288003 is an apocalyptic number.

20288003 is a deficient number, since it is larger than the sum of its proper divisors (1).

20288003 is an equidigital number, since it uses as much as digits as its factorization.

20288003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 20288003 is about 4504.2205763040. The cubic root of 20288003 is about 272.7384910975.

The spelling of 20288003 in words is "twenty million, two hundred eighty-eight thousand, three".