28030005001 has 2 divisors, whose sum is σ = 28030005002. Its totient is φ = 28030005000.

The previous prime is 28030004963. The next prime is 28030005043. The reversal of 28030005001 is 10050003082.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25172995600 + 2857009401 = 158660^2 + 53451^2 .

It is a cyclic number.

It is not a de Polignac number, because 28030005001 - 2²³ = 28021616393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28030005001.

It is not a weakly prime, because it can be changed into another prime (28030005061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14015002500 + 14015002501.

It is an arithmetic number, because the mean of its divisors is an integer number (14015002501).

Almost surely, 2^28030005001 is an apocalyptic number.

It is an amenable number.

28030005001 is a deficient number, since it is larger than the sum of its proper divisors (1).

28030005001 is an equidigital number, since it uses as much as digits as its factorization.

28030005001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 28030005001 its reverse (10050003082), we get a palindrome (38080008083).

The spelling of 28030005001 in words is "twenty-eight billion, thirty million, five thousand, one".