28308147165 has 32 divisors (see below), whose sum is σ = 50687683200. Its totient is φ = 14989052160.

The previous prime is 28308147163. The next prime is 28308147167. The reversal of 28308147165 is 56174180382.

It is an interprime number because it is at equal distance from previous prime (28308147163) and next prime (28308147167).

It is not a de Polignac number, because 28308147165 - 2¹ = 28308147163 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 28308147165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28308147163) 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 31 ways as a sum of consecutive naturals, for example, 735516 + ... + 773045.

It is an arithmetic number, because the mean of its divisors is an integer number (1583990100).

Almost surely, 2^28308147165 is an apocalyptic number.

It is an amenable number.

28308147165 is a deficient number, since it is larger than the sum of its proper divisors (22379536035).

28308147165 is a wasteful number, since it uses less digits than its factorization.

28308147165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1508714 (or 1508708 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 28308147165 in words is "twenty-eight billion, three hundred eight million, one hundred forty-seven thousand, one hundred sixty-five".