287923936 has 96 divisors (see below), whose sum is σ = 619375680. Its totient is φ = 131383296.

The previous prime is 287923921. The next prime is 287923943. The reversal of 287923936 is 639329782.

It is a super-3 number, since 3×287923936³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 287923936.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2641450 + ... + 2641558.

It is an arithmetic number, because the mean of its divisors is an integer number (6451830).

Almost surely, 2^287923936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 287923936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (309687840).

287923936 is an abundant number, since it is smaller than the sum of its proper divisors (331451744).

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

287923936 is a wasteful number, since it uses less digits than its factorization.

287923936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276 (or 268 counting only the distinct ones).

The product of its digits is 979776, while the sum is 49.

The square root of 287923936 is about 16968.3215433937. The cubic root of 287923936 is about 660.3273062815.

The spelling of 287923936 in words is "two hundred eighty-seven million, nine hundred twenty-three thousand, nine hundred thirty-six".