28343367779 has 8 divisors (see below), whose sum is σ = 29156607168. Its totient is φ = 27532612800.

The previous prime is 28343367749. The next prime is 28343367791. The reversal of 28343367779 is 97776334382.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28343367779 - 2²⁴ = 28326590563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28343367749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 597947 + ... + 643604.

It is an arithmetic number, because the mean of its divisors is an integer number (3644575896).

Almost surely, 2^28343367779 is an apocalyptic number.

28343367779 is a deficient number, since it is larger than the sum of its proper divisors (813239389).

28343367779 is a wasteful number, since it uses less digits than its factorization.

28343367779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242205.

The product of its digits is 32006016, while the sum is 59.

The spelling of 28343367779 in words is "twenty-eight billion, three hundred forty-three million, three hundred sixty-seven thousand, seven hundred seventy-nine".