287872860 has 48 divisors (see below), whose sum is σ = 879322752. Its totient is φ = 69787200.

The previous prime is 287872841. The next prime is 287872867. The reversal of 287872860 is 68278782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287872867) 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 15 ways as a sum of consecutive naturals, for example, 217426 + ... + 218745.

It is an arithmetic number, because the mean of its divisors is an integer number (18319224).

Almost surely, 2^287872860 is an apocalyptic number.

287872860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

287872860 is an abundant number, since it is smaller than the sum of its proper divisors (591449892).

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

287872860 is a wasteful number, since it uses less digits than its factorization.

287872860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436194 (or 436192 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 48.

The square root of 287872860 is about 16966.8164367980. The cubic root of 287872860 is about 660.2882579221.

The spelling of 287872860 in words is "two hundred eighty-seven million, eight hundred seventy-two thousand, eight hundred sixty".