28456195039 has 4 divisors (see below), whose sum is σ = 28463290056. Its totient is φ = 28449100024.

The previous prime is 28456195037. The next prime is 28456195051. The reversal of 28456195039 is 93059165482.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28456195039 - 2¹ = 28456195037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28456195037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3541489 + ... + 3549514.

It is an arithmetic number, because the mean of its divisors is an integer number (7115822514).

Almost surely, 2^28456195039 is an apocalyptic number.

28456195039 is a deficient number, since it is larger than the sum of its proper divisors (7095017).

28456195039 is an equidigital number, since it uses as much as digits as its factorization.

28456195039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7095016.

The product of its (nonzero) digits is 2332800, while the sum is 52.

The spelling of 28456195039 in words is "twenty-eight billion, four hundred fifty-six million, one hundred ninety-five thousand, thirty-nine".