298638 has 24 divisors (see below), whose sum is σ = 662688. Its totient is φ = 97152.

The previous prime is 298631. The next prime is 298651. The reversal of 298638 is 836892.

298638 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (298631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 670 + ... + 1022.

It is an arithmetic number, because the mean of its divisors is an integer number (27612).

2²⁹⁸⁶³⁸ is an apocalyptic number.

298638 is an abundant number, since it is smaller than the sum of its proper divisors (364050).

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

298638 is a wasteful number, since it uses less digits than its factorization.

298638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408 (or 405 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 298638 is about 546.4778129073. The cubic root of 298638 is about 66.8418337885.

The spelling of 298638 in words is "two hundred ninety-eight thousand, six hundred thirty-eight".