287906875 has 20 divisors (see below), whose sum is σ = 361284352. Its totient is φ = 229356000.

The previous prime is 287906873. The next prime is 287906881. The reversal of 287906875 is 578609782.

It is not a de Polignac number, because 287906875 - 2¹ = 287906873 is a prime.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (287906873) 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 19 ways as a sum of consecutive naturals, for example, 172294 + ... + 173956.

Almost surely, 2^287906875 is an apocalyptic number.

287906875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

287906875 is a deficient number, since it is larger than the sum of its proper divisors (73377477).

287906875 is an equidigital number, since it uses as much as digits as its factorization.

287906875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1960 (or 1945 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 52.

The square root of 287906875 is about 16967.8188050203. The cubic root of 287906875 is about 660.3142634077.

The spelling of 287906875 in words is "two hundred eighty-seven million, nine hundred six thousand, eight hundred seventy-five".