287340988 has 24 divisors (see below), whose sum is σ = 557558064. Its totient is φ = 128467200.

The previous prime is 287340983. The next prime is 287341013. The reversal of 287340988 is 889043782.

It is a super-2 number, since 2×287340988² = 165129686769632288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287340983) 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 7 ways as a sum of consecutive naturals, for example, 50845 + ... + 56212.

It is an arithmetic number, because the mean of its divisors is an integer number (23231586).

Almost surely, 2^287340988 is an apocalyptic number.

It is an amenable number.

287340988 is a deficient number, since it is larger than the sum of its proper divisors (270217076).

287340988 is a wasteful number, since it uses less digits than its factorization.

287340988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107133 (or 107131 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 49.

The square root of 287340988 is about 16951.1353012121. The cubic root of 287340988 is about 659.8813591459.

The spelling of 287340988 in words is "two hundred eighty-seven million, three hundred forty thousand, nine hundred eighty-eight".