298145 has 4 divisors (see below), whose sum is σ = 357780. Its totient is φ = 238512.

The previous prime is 298099. The next prime is 298153. The reversal of 298145 is 541892.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 132496 + 165649 = 364^2 + 407^2 .

It is a cyclic number.

It is not a de Polignac number, because 298145 - 2⁸ = 297889 is a prime.

It is an Ulam number.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 298145.

It is an unprimeable 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 3 ways as a sum of consecutive naturals, for example, 29810 + ... + 29819.

It is an arithmetic number, because the mean of its divisors is an integer number (89445).

2²⁹⁸¹⁴⁵ is an apocalyptic number.

It is an amenable number.

298145 is a deficient number, since it is larger than the sum of its proper divisors (59635).

298145 is an equidigital number, since it uses as much as digits as its factorization.

298145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59634.

The product of its digits is 2880, while the sum is 29.

The square root of 298145 is about 546.0265561307. The cubic root of 298145 is about 66.8050320710.

Subtracting from 298145 its sum of digits (29), we obtain a square (298116 = 546²).

The spelling of 298145 in words is "two hundred ninety-eight thousand, one hundred forty-five".