198502 has 4 divisors (see below), whose sum is σ = 297756. Its totient is φ = 99250.

The previous prime is 198491. The next prime is 198503. The reversal of 198502 is 205891.

198502 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198503) by changing a digit.

198502 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 as a sum of consecutive naturals, namely, 49624 + ... + 49627.

It is an arithmetic number, because the mean of its divisors is an integer number (74439).

2¹⁹⁸⁵⁰² is an apocalyptic number.

198502 is a deficient number, since it is larger than the sum of its proper divisors (99254).

198502 is an equidigital number, since it uses as much as digits as its factorization.

198502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99253.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 198502 is about 445.5356326940. The cubic root of 198502 is about 58.3339827592. Note that the first 3 decimals are identical.

The spelling of 198502 in words is "one hundred ninety-eight thousand, five hundred two".