298140 has 24 divisors (see below), whose sum is σ = 834960. Its totient is φ = 79488.

The previous prime is 298099. The next prime is 298153. The reversal of 298140 is 41892.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 298140.

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 298140.

It is an unprimeable number.

298140 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 7 ways as a sum of consecutive naturals, for example, 2425 + ... + 2544.

It is an arithmetic number, because the mean of its divisors is an integer number (34790).

2²⁹⁸¹⁴⁰ is an apocalyptic number.

298140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

298140 is an abundant number, since it is smaller than the sum of its proper divisors (536820).

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

298140 is a wasteful number, since it uses less digits than its factorization.

298140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4981 (or 4979 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 298140 is about 546.0219775797. The cubic root of 298140 is about 66.8046586207.

Subtracting from 298140 its sum of digits (24), we obtain a square (298116 = 546²).

The spelling of 298140 in words is "two hundred ninety-eight thousand, one hundred forty".