239986656 has 144 divisors (see below), whose sum is σ = 840045024. Its totient is φ = 63286272.

The previous prime is 239986639. The next prime is 239986661. The reversal of 239986656 is 656689932.

239986656 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21630 + ... + 30786.

It is an arithmetic number, because the mean of its divisors is an integer number (5833646).

Almost surely, 2^239986656 is an apocalyptic number.

239986656 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 239986656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (420022512).

239986656 is an abundant number, since it is smaller than the sum of its proper divisors (600058368).

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

239986656 is a wasteful number, since it uses less digits than its factorization.

239986656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9193 (or 9182 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 54.

The square root of 239986656 is about 15491.5027030950. The cubic root of 239986656 is about 621.4349835022.

The spelling of 239986656 in words is "two hundred thirty-nine million, nine hundred eighty-six thousand, six hundred fifty-six".