287261112 has 16 divisors (see below), whose sum is σ = 718152840. Its totient is φ = 95753696.

The previous prime is 287261111. The next prime is 287261119. The reversal of 287261112 is 211162782.

It is a self number, because there is not a number n which added to its sum of digits gives 287261112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287261111) 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, 5984583 + ... + 5984630.

Almost surely, 2^287261112 is an apocalyptic number.

It is an amenable number.

287261112 is an abundant number, since it is smaller than the sum of its proper divisors (430891728).

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

287261112 is a wasteful number, since it uses less digits than its factorization.

287261112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11969222 (or 11969218 counting only the distinct ones).

The product of its digits is 2688, while the sum is 30.

The square root of 287261112 is about 16948.7790710718. The cubic root of 287261112 is about 659.8202081436.

The spelling of 287261112 in words is "two hundred eighty-seven million, two hundred sixty-one thousand, one hundred twelve".