197998200 has 144 divisors (see below), whose sum is σ = 668963880. Its totient is φ = 52481280.

The previous prime is 197998189. The next prime is 197998217. The reversal of 197998200 is 2899791.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 570427 + ... + 570773.

Almost surely, 2^197998200 is an apocalyptic number.

197998200 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 197998200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (334481940).

197998200 is an abundant number, since it is smaller than the sum of its proper divisors (470965680).

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

197998200 is a wasteful number, since it uses less digits than its factorization.

197998200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686 (or 674 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The square root of 197998200 is about 14071.1833191100. The cubic root of 197998200 is about 582.8459021147.

The spelling of 197998200 in words is "one hundred ninety-seven million, nine hundred ninety-eight thousand, two hundred".