28003397759 has 4 divisors (see below), whose sum is σ = 29220936816. Its totient is φ = 26785858704.

The previous prime is 28003397729. The next prime is 28003397761. The reversal of 28003397759 is 95779330082.

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 28003397759 - 2⁸ = 28003397503 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28003397759.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28003397729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 608769494 + ... + 608769539.

It is an arithmetic number, because the mean of its divisors is an integer number (7305234204).

Almost surely, 2^28003397759 is an apocalyptic number.

28003397759 is a deficient number, since it is larger than the sum of its proper divisors (1217539057).

28003397759 is a wasteful number, since it uses less digits than its factorization.

28003397759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1217539056.

The product of its (nonzero) digits is 2857680, while the sum is 53.

The spelling of 28003397759 in words is "twenty-eight billion, three million, three hundred ninety-seven thousand, seven hundred fifty-nine".