28080007515 has 48 divisors (see below), whose sum is σ = 55665792000. Its totient is φ = 12827198016.

The previous prime is 28080007513. The next prime is 28080007517. The reversal of 28080007515 is 51570008082.

It is an interprime number because it is at equal distance from previous prime (28080007513) and next prime (28080007517).

It is not a de Polignac number, because 28080007515 - 2¹ = 28080007513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28080007515.

It is not an unprimeable number, because it can be changed into a prime (28080007513) 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 47 ways as a sum of consecutive naturals, for example, 408826 + ... + 472544.

It is an arithmetic number, because the mean of its divisors is an integer number (1159704000).

Almost surely, 2^28080007515 is an apocalyptic number.

28080007515 is a deficient number, since it is larger than the sum of its proper divisors (27585784485).

28080007515 is a wasteful number, since it uses less digits than its factorization.

28080007515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65136 (or 65133 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 36.

The spelling of 28080007515 in words is "twenty-eight billion, eighty million, seven thousand, five hundred fifteen".