28530282465 has 12 divisors (see below), whose sum is σ = 49452489684. Its totient is φ = 15216150624.

The previous prime is 28530282457. The next prime is 28530282479. The reversal of 28530282465 is 56428203582.

28530282465 is a `hidden beast` number, since 2 + 85 + 30 + 2 + 82 + 465 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5099245281 + 23431037184 = 71409^2 + 153072^2 .

It is not a de Polignac number, because 28530282465 - 2³ = 28530282457 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 634006277 = 28530282465 / (2 + 8 + 5 + 3 + 0 + 2 + 8 + 2 + 4 + 6 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 28530282465.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 317003094 + ... + 317003183.

It is an arithmetic number, because the mean of its divisors is an integer number (4121040807).

Almost surely, 2^28530282465 is an apocalyptic number.

It is an amenable number.

28530282465 is a deficient number, since it is larger than the sum of its proper divisors (20922207219).

28530282465 is a wasteful number, since it uses less digits than its factorization.

28530282465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634006288 (or 634006285 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 45.

The spelling of 28530282465 in words is "twenty-eight billion, five hundred thirty million, two hundred eighty-two thousand, four hundred sixty-five".