28896667517 has 4 divisors (see below), whose sum is σ = 28901618880. Its totient is φ = 28891716156.

The previous prime is 28896667483. The next prime is 28896667537. The reversal of 28896667517 is 71576669882.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28896667517 - 2²² = 28892473213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28896667537) 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 3 ways as a sum of consecutive naturals, for example, 2466917 + ... + 2478602.

It is an arithmetic number, because the mean of its divisors is an integer number (7225404720).

Almost surely, 2^28896667517 is an apocalyptic number.

It is an amenable number.

28896667517 is a deficient number, since it is larger than the sum of its proper divisors (4951363).

28896667517 is an equidigital number, since it uses as much as digits as its factorization.

28896667517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4951362.

The product of its digits is 60963840, while the sum is 65.

The spelling of 28896667517 in words is "twenty-eight billion, eight hundred ninety-six million, six hundred sixty-seven thousand, five hundred seventeen".