28979176568 has 8 divisors (see below), whose sum is σ = 54335956080. Its totient is φ = 14489588280.

The previous prime is 28979176547. The next prime is 28979176571. The reversal of 28979176568 is 86567197982.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 28979176498 and 28979176507.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1811198528 + ... + 1811198543.

It is an arithmetic number, because the mean of its divisors is an integer number (6791994510).

Almost surely, 2^28979176568 is an apocalyptic number.

It is an amenable number.

28979176568 is a deficient number, since it is larger than the sum of its proper divisors (25356779512).

28979176568 is a wasteful number, since it uses less digits than its factorization.

28979176568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3622397077 (or 3622397073 counting only the distinct ones).

The product of its digits is 91445760, while the sum is 68.

The spelling of 28979176568 in words is "twenty-eight billion, nine hundred seventy-nine million, one hundred seventy-six thousand, five hundred sixty-eight".