28783274579 has 4 divisors (see below), whose sum is σ = 28783879440. Its totient is φ = 28782669720.

The previous prime is 28783274521. The next prime is 28783274581. The reversal of 28783274579 is 97547238782.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28783274579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28783274519) 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, 224327 + ... + 328464.

It is an arithmetic number, because the mean of its divisors is an integer number (7195969860).

Almost surely, 2^28783274579 is an apocalyptic number.

28783274579 is a deficient number, since it is larger than the sum of its proper divisors (604861).

28783274579 is an equidigital number, since it uses as much as digits as its factorization.

28783274579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604860.

The product of its digits is 47416320, while the sum is 62.

The spelling of 28783274579 in words is "twenty-eight billion, seven hundred eighty-three million, two hundred seventy-four thousand, five hundred seventy-nine".