287065988 has 12 divisors (see below), whose sum is σ = 548035152. Its totient is φ = 130484520.

The previous prime is 287065951. The next prime is 287066023. The reversal of 287065988 is 889560782.

It is a super-2 number, since 2×287065988² = 164813762932832288, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3262070 + ... + 3262157.

It is an arithmetic number, because the mean of its divisors is an integer number (45669596).

Almost surely, 2^287065988 is an apocalyptic number.

It is an amenable number.

287065988 is a deficient number, since it is larger than the sum of its proper divisors (260969164).

287065988 is a wasteful number, since it uses less digits than its factorization.

287065988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6524242 (or 6524240 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 53.

The square root of 287065988 is about 16943.0218084024. The cubic root of 287065988 is about 659.6707785659.

The spelling of 287065988 in words is "two hundred eighty-seven million, sixty-five thousand, nine hundred eighty-eight".