287268128676 has 27 divisors (see below), whose sum is σ = 726158120961. Its totient is φ = 95754970944.

The previous prime is 287268128659. The next prime is 287268128701. The reversal of 287268128676 is 676821862782.

The square root of 287268128676 is 535974.

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

287268128676 is a `hidden beast` number, since 28 + 7 + 268 + 1 + 286 + 76 = 666.

It can be written as a sum of positive squares in only one way, i.e., 258395322276 + 28872806400 = 508326^2 + 169920^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3171180 + ... + 3260508.

Almost surely, 2^287268128676 is an apocalyptic number.

287268128676 is the 535974-th square number.

It is an amenable number.

287268128676 is an abundant number, since it is smaller than the sum of its proper divisors (438889992285).

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

287268128676 is an frugal number, since it uses more digits than its factorization.

287268128676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178668 (or 89334 counting only the distinct ones).

The product of its digits is 43352064, while the sum is 63.

The spelling of 287268128676 in words is "two hundred eighty-seven billion, two hundred sixty-eight million, one hundred twenty-eight thousand, six hundred seventy-six".