28034851517 has 4 divisors (see below), whose sum is σ = 28035853980. Its totient is φ = 28033849056.

The previous prime is 28034851511. The next prime is 28034851531. The reversal of 28034851517 is 71515843082.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3009509881 + 25025341636 = 54859^2 + 158194^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28034851517 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 (28034851511) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 458042 + ... + 515627.

It is an arithmetic number, because the mean of its divisors is an integer number (7008963495).

Almost surely, 2^28034851517 is an apocalyptic number.

It is an amenable number.

28034851517 is a deficient number, since it is larger than the sum of its proper divisors (1002463).

28034851517 is an equidigital number, since it uses as much as digits as its factorization.

28034851517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002462.

The product of its (nonzero) digits is 268800, while the sum is 44.

The spelling of 28034851517 in words is "twenty-eight billion, thirty-four million, eight hundred fifty-one thousand, five hundred seventeen".