287287960 has 32 divisors (see below), whose sum is σ = 656051760. Its totient is φ = 113198976.

The previous prime is 287287951. The next prime is 287287969. The reversal of 287287960 is 69782782.

It is an interprime number because it is at equal distance from previous prime (287287951) and next prime (287287969).

It is a super-3 number, since 3×287287960³ (a number of 26 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287287969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50919 + ... + 56278.

Almost surely, 2^287287960 is an apocalyptic number.

287287960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

287287960 is an abundant number, since it is smaller than the sum of its proper divisors (368763800).

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

287287960 is a wasteful number, since it uses less digits than its factorization.

287287960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107275 (or 107271 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 49.

The square root of 287287960 is about 16949.5710860187. The cubic root of 287287960 is about 659.8407635435.

The spelling of 287287960 in words is "two hundred eighty-seven million, two hundred eighty-seven thousand, nine hundred sixty".