28343857763 has 4 divisors (see below), whose sum is σ = 30524154528. Its totient is φ = 26163561000.

The previous prime is 28343857681. The next prime is 28343857777. The reversal of 28343857763 is 36775834382.

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

It is a cyclic number.

It is not a de Polignac number, because 28343857763 - 2¹² = 28343853667 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28343857699 and 28343857708.

It is not an unprimeable number, because it can be changed into a prime (28343817763) 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, 1090148363 + ... + 1090148388.

It is an arithmetic number, because the mean of its divisors is an integer number (7631038632).

Almost surely, 2^28343857763 is an apocalyptic number.

28343857763 is a deficient number, since it is larger than the sum of its proper divisors (2180296765).

28343857763 is a wasteful number, since it uses less digits than its factorization.

28343857763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2180296764.

The product of its digits is 20321280, while the sum is 56.

The spelling of 28343857763 in words is "twenty-eight billion, three hundred forty-three million, eight hundred fifty-seven thousand, seven hundred sixty-three".