287265488 has 20 divisors (see below), whose sum is σ = 563624640. Its totient is φ = 141813984.

The previous prime is 287265487. The next prime is 287265529. The reversal of 287265488 is 884562782.

It is a happy number.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287265487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112370 + ... + 114897.

It is an arithmetic number, because the mean of its divisors is an integer number (28181232).

Almost surely, 2^287265488 is an apocalyptic number.

It is an amenable number.

287265488 is a deficient number, since it is larger than the sum of its proper divisors (276359152).

287265488 is a wasteful number, since it uses less digits than its factorization.

287265488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227354 (or 227348 counting only the distinct ones).

The product of its digits is 1720320, while the sum is 50.

The square root of 287265488 is about 16948.9081654247. The cubic root of 287265488 is about 659.8235585897.

The spelling of 287265488 in words is "two hundred eighty-seven million, two hundred sixty-five thousand, four hundred eighty-eight".