197800 has 48 divisors (see below), whose sum is σ = 491040. Its totient is φ = 73920.

The previous prime is 197779. The next prime is 197803. The reversal of 197800 is 8791.

197800 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (197803) by changing a digit.

197800 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 11 ways as a sum of consecutive naturals, for example, 4579 + ... + 4621.

It is an arithmetic number, because the mean of its divisors is an integer number (10230).

2¹⁹⁷⁸⁰⁰ is an apocalyptic number.

197800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 197800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245520).

197800 is an abundant number, since it is smaller than the sum of its proper divisors (293240).

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

197800 is a wasteful number, since it uses less digits than its factorization.

197800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82 (or 73 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 197800 is about 444.7471191587. The cubic root of 197800 is about 58.2651357206.

The spelling of 197800 in words is "one hundred ninety-seven thousand, eight hundred".