298740 has 48 divisors (see below), whose sum is σ = 903168. Its totient is φ = 73344.

The previous prime is 298733. The next prime is 298757. The reversal of 298740 is 47892.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 298698 and 298707.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 298740.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 589 + ... + 971.

It is an arithmetic number, because the mean of its divisors is an integer number (18816).

2²⁹⁸⁷⁴⁰ is an apocalyptic number.

298740 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 298740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (451584).

298740 is an abundant number, since it is smaller than the sum of its proper divisors (604428).

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

298740 is a wasteful number, since it uses less digits than its factorization.

298740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408 (or 406 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 298740 is about 546.5711298633. The cubic root of 298740 is about 66.8494428793.

The spelling of 298740 in words is "two hundred ninety-eight thousand, seven hundred forty".