28330251139 has 4 divisors (see below), whose sum is σ = 29244130240. Its totient is φ = 27416372040.

The previous prime is 28330251133. The next prime is 28330251143. The reversal of 28330251139 is 93115203382.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28330251139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28330251098 and 28330251107.

It is not an unprimeable number, because it can be changed into a prime (28330251133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 456939504 + ... + 456939565.

It is an arithmetic number, because the mean of its divisors is an integer number (7311032560).

Almost surely, 2^28330251139 is an apocalyptic number.

28330251139 is a deficient number, since it is larger than the sum of its proper divisors (913879101).

28330251139 is an equidigital number, since it uses as much as digits as its factorization.

28330251139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913879100.

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 28330251139 in words is "twenty-eight billion, three hundred thirty million, two hundred fifty-one thousand, one hundred thirty-nine".