298400 has 36 divisors (see below), whose sum is σ = 730422. Its totient is φ = 119040.

The previous prime is 298399. The next prime is 298409. The reversal of 298400 is 4892.

It can be written as a sum of positive squares in 3 ways, for example, as 226576 + 71824 = 476^2 + 268^2 .

It is not an unprimeable number, because it can be changed into a prime (298409) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 614 + ... + 986.

2²⁹⁸⁴⁰⁰ is an apocalyptic number.

298400 is a gapful number since it is divisible by the number (20) 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 298400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (365211).

298400 is an abundant number, since it is smaller than the sum of its proper divisors (432022).

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

298400 is a wasteful number, since it uses less digits than its factorization.

298400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393 (or 380 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 298400 is about 546.2600113499. The cubic root of 298400 is about 66.8240725030.

The spelling of 298400 in words is "two hundred ninety-eight thousand, four hundred".