28913936783 has 4 divisors (see below), whose sum is σ = 29107990200. Its totient is φ = 28719883368.

The previous prime is 28913936699. The next prime is 28913936791. The reversal of 28913936783 is 38763931982.

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 28913936783 - 2¹⁰ = 28913935759 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 (28913936383) 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, 97026485 + ... + 97026782.

It is an arithmetic number, because the mean of its divisors is an integer number (7276997550).

Almost surely, 2^28913936783 is an apocalyptic number.

28913936783 is a deficient number, since it is larger than the sum of its proper divisors (194053417).

28913936783 is a wasteful number, since it uses less digits than its factorization.

28913936783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194053416.

The product of its digits is 11757312, while the sum is 59.

The spelling of 28913936783 in words is "twenty-eight billion, nine hundred thirteen million, nine hundred thirty-six thousand, seven hundred eighty-three".