28130603 has 2 divisors, whose sum is σ = 28130604. Its totient is φ = 28130602.

The previous prime is 28130593. The next prime is 28130647. The reversal of 28130603 is 30603182.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28130603 - 2¹² = 28126507 is a prime.

It is not a weakly prime, because it can be changed into another prime (28130653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14065301 + 14065302.

It is an arithmetic number, because the mean of its divisors is an integer number (14065302).

Almost surely, 2^28130603 is an apocalyptic number.

28130603 is a deficient number, since it is larger than the sum of its proper divisors (1).

28130603 is an equidigital number, since it uses as much as digits as its factorization.

28130603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 28130603 is about 5303.8290884982. The cubic root of 28130603 is about 304.1302931505.

Adding to 28130603 its reverse (30603182), we get a palindrome (58733785).

The spelling of 28130603 in words is "twenty-eight million, one hundred thirty thousand, six hundred three".