28104034815 has 48 divisors (see below), whose sum is σ = 49882884480. Its totient is φ = 14629567680.

The previous prime is 28104034801. The next prime is 28104034837. The reversal of 28104034815 is 51843040182.

It is not a de Polignac number, because 28104034815 - 2¹⁴ = 28104018431 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28104034815.

It is a congruent number.

It is an unprimeable number.

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, 3128280 + ... + 3137250.

It is an arithmetic number, because the mean of its divisors is an integer number (1039226760).

Almost surely, 2^28104034815 is an apocalyptic number.

28104034815 is a deficient number, since it is larger than the sum of its proper divisors (21778849665).

28104034815 is a wasteful number, since it uses less digits than its factorization.

28104034815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10644 (or 10641 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

Adding to 28104034815 its reverse (51843040182), we get a palindrome (79947074997).

The spelling of 28104034815 in words is "twenty-eight billion, one hundred four million, thirty-four thousand, eight hundred fifteen".