28314556979 has 8 divisors (see below), whose sum is σ = 29819791440. Its totient is φ = 26810822016.

The previous prime is 28314556961. The next prime is 28314557021. The reversal of 28314556979 is 97965541382.

It is a happy number.

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 28314556979 - 2³² = 24019589683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28314156979) 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, 336002 + ... + 411735.

It is an arithmetic number, because the mean of its divisors is an integer number (3727473930).

Almost surely, 2^28314556979 is an apocalyptic number.

28314556979 is a deficient number, since it is larger than the sum of its proper divisors (1505234461).

28314556979 is a wasteful number, since it uses less digits than its factorization.

28314556979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749749.

The product of its digits is 16329600, while the sum is 59.

The spelling of 28314556979 in words is "twenty-eight billion, three hundred fourteen million, five hundred fifty-six thousand, nine hundred seventy-nine".