287885696 has 32 divisors (see below), whose sum is σ = 655456080. Its totient is φ = 123379200.

The previous prime is 287885681. The next prime is 287885699. The reversal of 287885696 is 696588782.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×287885696² = 165756347922808832, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287885699) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159755 + ... + 161546.

Almost surely, 2^287885696 is an apocalyptic number.

It is an amenable number.

287885696 is an abundant number, since it is smaller than the sum of its proper divisors (367570384).

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

287885696 is an equidigital number, since it uses as much as digits as its factorization.

287885696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321322 (or 321310 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 59.

The square root of 287885696 is about 16967.1947003622. The cubic root of 287885696 is about 660.2980716690.

The spelling of 287885696 in words is "two hundred eighty-seven million, eight hundred eighty-five thousand, six hundred ninety-six".