198750 has 40 divisors (see below), whose sum is σ = 506088. Its totient is φ = 52000.

The previous prime is 198733. The next prime is 198761. The reversal of 198750 is 57891.

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

It is a zygodrome in base 5.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3724 + ... + 3776.

2¹⁹⁸⁷⁵⁰ is an apocalyptic number.

198750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 198750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (253044).

198750 is an abundant number, since it is smaller than the sum of its proper divisors (307338).

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

198750 is an equidigital number, since it uses as much as digits as its factorization.

198750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78 (or 63 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 30.

The square root of 198750 is about 445.8138625032. The cubic root of 198750 is about 58.3582659858.

The spelling of 198750 in words is "one hundred ninety-eight thousand, seven hundred fifty".