28502323207 has 2 divisors, whose sum is σ = 28502323208. Its totient is φ = 28502323206.

The previous prime is 28502323177. The next prime is 28502323217. The reversal of 28502323207 is 70232320582.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28502323207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28502323217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14251161603 + 14251161604.

It is an arithmetic number, because the mean of its divisors is an integer number (14251161604).

Almost surely, 2^28502323207 is an apocalyptic number.

28502323207 is a deficient number, since it is larger than the sum of its proper divisors (1).

28502323207 is an equidigital number, since it uses as much as digits as its factorization.

28502323207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 34.

Adding to 28502323207 its reverse (70232320582), we get a palindrome (98734643789).

The spelling of 28502323207 in words is "twenty-eight billion, five hundred two million, three hundred twenty-three thousand, two hundred seven".