28345641001 has 4 divisors (see below), whose sum is σ = 28687154832. Its totient is φ = 28004127172.

The previous prime is 28345640971. The next prime is 28345641043. The reversal of 28345641001 is 10014654382.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28345641001 - 2¹¹ = 28345638953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28345641601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170756791 + ... + 170756956.

It is an arithmetic number, because the mean of its divisors is an integer number (7171788708).

Almost surely, 2^28345641001 is an apocalyptic number.

It is an amenable number.

28345641001 is a deficient number, since it is larger than the sum of its proper divisors (341513831).

28345641001 is an equidigital number, since it uses as much as digits as its factorization.

28345641001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341513830.

The product of its (nonzero) digits is 23040, while the sum is 34.

The spelling of 28345641001 in words is "twenty-eight billion, three hundred forty-five million, six hundred forty-one thousand, one".