28515343680576 has 63 divisors (see below), whose sum is σ = 81734451404151. Its totient is φ = 9505071840384.

The previous prime is 28515343680553. The next prime is 28515343680587. The reversal of 28515343680576 is 67508634351582.

The square root of 28515343680576 is 5339976.

It is a perfect power (a square), and thus also a powerful number.

28515343680576 is a `hidden beast` number, since 2 + 8 + 5 + 1 + 53 + 4 + 3 + 6 + 8 + 0 + 576 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 128048175 + ... + 128270673.

Almost surely, 2^{28515343680576} is an apocalyptic number.

28515343680576 is the 5339976-th square number.

It is an amenable number.

28515343680576 is an abundant number, since it is smaller than the sum of its proper divisors (53219107723575).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28515343680576 is an frugal number, since it uses more digits than its factorization.

28515343680576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445016 (or 222504 counting only the distinct ones).

The product of its (nonzero) digits is 145152000, while the sum is 63.

The spelling of 28515343680576 in words is "twenty-eight trillion, five hundred fifteen billion, three hundred forty-three million, six hundred eighty thousand, five hundred seventy-six".