287704842 has 16 divisors (see below), whose sum is σ = 575652000. Its totient is φ = 95861232.

The previous prime is 287704819. The next prime is 287704867. The reversal of 287704842 is 248407782.

It is a super-2 number, since 2×287704842² = 165548152220489928, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 287704794 and 287704803.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7773 + ... + 25215.

It is an arithmetic number, because the mean of its divisors is an integer number (35978250).

Almost surely, 2^287704842 is an apocalyptic number.

287704842 is an abundant number, since it is smaller than the sum of its proper divisors (287947158).

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

287704842 is a wasteful number, since it uses less digits than its factorization.

287704842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20197.

The product of its (nonzero) digits is 200704, while the sum is 42.

The square root of 287704842 is about 16961.8643432849. The cubic root of 287704842 is about 660.1597730729.

The spelling of 287704842 in words is "two hundred eighty-seven million, seven hundred four thousand, eight hundred forty-two".