28995086793 has 4 divisors (see below), whose sum is σ = 38660115728. Its totient is φ = 19330057860.

The previous prime is 28995086789. The next prime is 28995086807. The reversal of 28995086793 is 39768059982.

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 not a de Polignac number, because 28995086793 - 2² = 28995086789 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28995086773) 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, 4832514463 + ... + 4832514468.

It is an arithmetic number, because the mean of its divisors is an integer number (9665028932).

Almost surely, 2^28995086793 is an apocalyptic number.

It is an amenable number.

28995086793 is a deficient number, since it is larger than the sum of its proper divisors (9665028935).

28995086793 is an equidigital number, since it uses as much as digits as its factorization.

28995086793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9665028934.

The product of its (nonzero) digits is 58786560, while the sum is 66.

The spelling of 28995086793 in words is "twenty-eight billion, nine hundred ninety-five million, eighty-six thousand, seven hundred ninety-three".