288731912 has 64 divisors (see below), whose sum is σ = 636720000. Its totient is φ = 122689728.

The previous prime is 288731909. The next prime is 288731929. The reversal of 288731912 is 219137882.

It is a super-2 number, since 2×288731912² = 166732234014351488, which contains 22 as substring.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 288731912.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 381038 + ... + 381794.

It is an arithmetic number, because the mean of its divisors is an integer number (9948750).

Almost surely, 2^288731912 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 288731912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (318360000).

288731912 is an abundant number, since it is smaller than the sum of its proper divisors (347988088).

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

288731912 is a wasteful number, since it uses less digits than its factorization.

288731912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923 (or 905 counting only the distinct ones).

The product of its digits is 48384, while the sum is 41.

The square root of 288731912 is about 16992.1132293779. The cubic root of 288731912 is about 660.9444025126.

The spelling of 288731912 in words is "two hundred eighty-eight million, seven hundred thirty-one thousand, nine hundred twelve".