288315856 has 40 divisors (see below), whose sum is σ = 589515840. Its totient is φ = 136325376.

The previous prime is 288315851. The next prime is 288315893. The reversal of 288315856 is 658513882.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (288315851) 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, 28351 + ... + 37153.

It is an arithmetic number, because the mean of its divisors is an integer number (14737896).

Almost surely, 2^288315856 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 288315856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (294757920).

288315856 is an abundant number, since it is smaller than the sum of its proper divisors (301199984).

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

288315856 is a wasteful number, since it uses less digits than its factorization.

288315856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8923 (or 8917 counting only the distinct ones).

The product of its digits is 460800, while the sum is 46.

The square root of 288315856 is about 16979.8661949969. The cubic root of 288315856 is about 660.6267813752.

The spelling of 288315856 in words is "two hundred eighty-eight million, three hundred fifteen thousand, eight hundred fifty-six".