287085828 has 12 divisors (see below), whose sum is σ = 669866960. Its totient is φ = 95695272.

The previous prime is 287085809. The next prime is 287085833. The reversal of 287085828 is 828580782.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

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, 11961898 + ... + 11961921.

Almost surely, 2^287085828 is an apocalyptic number.

It is an amenable number.

287085828 is an abundant number, since it is smaller than the sum of its proper divisors (382781132).

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

287085828 is a wasteful number, since it uses less digits than its factorization.

287085828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23923826 (or 23923824 counting only the distinct ones).

The product of its (nonzero) digits is 573440, while the sum is 48.

The square root of 287085828 is about 16943.6072900667. The cubic root of 287085828 is about 659.6859754977.

The spelling of 287085828 in words is "two hundred eighty-seven million, eighty-five thousand, eight hundred twenty-eight".