28917566793604 has 24 divisors (see below), whose sum is σ = 50993272538208. Its totient is φ = 14348065667520.

The previous prime is 28917566793593. The next prime is 28917566793629. The reversal of 28917566793604 is 40639766571982.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21856347 + ... + 23141629.

It is an arithmetic number, because the mean of its divisors is an integer number (2124719689092).

It is a 1-persistent number, because it is pandigital, but 2⋅28917566793604 = 57835133587208 is not.

Almost surely, 2^{28917566793604} is an apocalyptic number.

It is an amenable number.

28917566793604 is a deficient number, since it is larger than the sum of its proper divisors (22075705744604).

28917566793604 is a wasteful number, since it uses less digits than its factorization.

28917566793604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328355 (or 1328353 counting only the distinct ones).

The product of its (nonzero) digits is 823011840, while the sum is 73.

The spelling of 28917566793604 in words is "twenty-eight trillion, nine hundred seventeen billion, five hundred sixty-six million, seven hundred ninety-three thousand, six hundred four".