298890 has 56 divisors (see below), whose sum is σ = 826308. Its totient is φ = 77760.

The previous prime is 298861. The next prime is 298897. The reversal of 298890 is 98892.

It can be written as a sum of positive squares in 2 ways, for example, as 263169 + 35721 = 513^2 + 189^2 .

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (298897) by changing a digit.

298890 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 7270 + ... + 7310.

2²⁹⁸⁸⁹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 298890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (413154).

298890 is an abundant number, since it is smaller than the sum of its proper divisors (527418).

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

298890 is an equidigital number, since it uses as much as digits as its factorization.

298890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66 (or 51 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 298890 is about 546.7083317455. The cubic root of 298890 is about 66.8606295730.

The spelling of 298890 in words is "two hundred ninety-eight thousand, eight hundred ninety".