28075622399 has 4 divisors (see below), whose sum is σ = 30627951720. Its totient is φ = 25523293080.

The previous prime is 28075622389. The next prime is 28075622401. The reversal of 28075622399 is 99322657082.

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 28075622399 - 2³² = 23780655103 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 28075622399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28075622389) 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, 1276164644 + ... + 1276164665.

It is an arithmetic number, because the mean of its divisors is an integer number (7656987930).

Almost surely, 2^28075622399 is an apocalyptic number.

28075622399 is a deficient number, since it is larger than the sum of its proper divisors (2552329321).

28075622399 is a wasteful number, since it uses less digits than its factorization.

28075622399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2552329320.

The product of its (nonzero) digits is 3265920, while the sum is 53.

The spelling of 28075622399 in words is "twenty-eight billion, seventy-five million, six hundred twenty-two thousand, three hundred ninety-nine".