287113872 has 20 divisors (see below), whose sum is σ = 741710960. Its totient is φ = 95704608.

The previous prime is 287113861. The next prime is 287113933. The reversal of 287113872 is 278311782.

It is a self number, because there is not a number n which added to its sum of digits gives 287113872.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2990722 + ... + 2990817.

It is an arithmetic number, because the mean of its divisors is an integer number (37085548).

Almost surely, 2^287113872 is an apocalyptic number.

It is an amenable number.

287113872 is an abundant number, since it is smaller than the sum of its proper divisors (454597088).

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

287113872 is a wasteful number, since it uses less digits than its factorization.

287113872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5981550 (or 5981544 counting only the distinct ones).

The product of its digits is 37632, while the sum is 39.

The square root of 287113872 is about 16944.4348386129. The cubic root of 287113872 is about 659.7074552892.

The spelling of 287113872 in words is "two hundred eighty-seven million, one hundred thirteen thousand, eight hundred seventy-two".