28904002656308 has 12 divisors (see below), whose sum is σ = 54472928083140. Its totient is φ = 13340308918272.

The previous prime is 28904002656209. The next prime is 28904002656317. The reversal of 28904002656308 is 80365620040982.

It can be written as a sum of positive squares in 2 ways, for example, as 15283267621924 + 13620735034384 = 3909382^2 + 3690628^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28904002656308.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 277923102413 + ... + 277923102516.

It is an arithmetic number, because the mean of its divisors is an integer number (4539410673595).

Almost surely, 2^{28904002656308} is an apocalyptic number.

It is an amenable number.

28904002656308 is a deficient number, since it is larger than the sum of its proper divisors (25568925426832).

28904002656308 is a wasteful number, since it uses less digits than its factorization.

28904002656308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555846204946 (or 555846204944 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 53.

The spelling of 28904002656308 in words is "twenty-eight trillion, nine hundred four billion, two million, six hundred fifty-six thousand, three hundred eight".