298656 has 72 divisors (see below), whose sum is σ = 914004. Its totient is φ = 92160.

The previous prime is 298651. The next prime is 298667. The reversal of 298656 is 656892.

It can be written as a sum of positive squares in 2 ways, for example, as 291600 + 7056 = 540^2 + 84^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 298656.

It is not an unprimeable number, because it can be changed into a prime (298651) by changing a digit.

298656 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4866 + ... + 4926.

2²⁹⁸⁶⁵⁶ 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 298656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (457002).

298656 is an abundant number, since it is smaller than the sum of its proper divisors (615348).

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

298656 is a wasteful number, since it uses less digits than its factorization.

298656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94 (or 83 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 298656 is about 546.4942817633. The cubic root of 298656 is about 66.8431766951.

The spelling of 298656 in words is "two hundred ninety-eight thousand, six hundred fifty-six".