28973174076478 has 32 divisors (see below), whose sum is σ = 45887816103840. Its totient is φ = 13681970910720.

The previous prime is 28973174076449. The next prime is 28973174076503. The reversal of 28973174076478 is 87467047137982.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 28973174076478.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22293226 + ... + 23557042.

It is an arithmetic number, because the mean of its divisors is an integer number (1433994253245).

Almost surely, 2^{28973174076478} is an apocalyptic number.

28973174076478 is a deficient number, since it is larger than the sum of its proper divisors (16914642027362).

28973174076478 is a wasteful number, since it uses less digits than its factorization.

28973174076478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265692.

The product of its (nonzero) digits is 796594176, while the sum is 73.

The spelling of 28973174076478 in words is "twenty-eight trillion, nine hundred seventy-three billion, one hundred seventy-four million, seventy-six thousand, four hundred seventy-eight".