28304358503 has 2 divisors, whose sum is σ = 28304358504. Its totient is φ = 28304358502.

The previous prime is 28304358499. The next prime is 28304358529. The reversal of 28304358503 is 30585340382.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28304358503 - 2² = 28304358499 is a prime.

It is a super-2 number, since 2×28304358503² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28304354503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14152179251 + 14152179252.

It is an arithmetic number, because the mean of its divisors is an integer number (14152179252).

Almost surely, 2^28304358503 is an apocalyptic number.

28304358503 is a deficient number, since it is larger than the sum of its proper divisors (1).

28304358503 is an equidigital number, since it uses as much as digits as its factorization.

28304358503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 345600, while the sum is 41.

Adding to 28304358503 its reverse (30585340382), we get a palindrome (58889698885).

The spelling of 28304358503 in words is "twenty-eight billion, three hundred four million, three hundred fifty-eight thousand, five hundred three".