197388 has 18 divisors (see below), whose sum is σ = 499044. Its totient is φ = 65784.

The previous prime is 197383. The next prime is 197389. The reversal of 197388 is 883791.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 5483 = 197388 / (1 + 9 + 7 + 3 + 8 + 8).

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (197381) by changing a digit.

197388 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 5 ways as a sum of consecutive naturals, for example, 2706 + ... + 2777.

2¹⁹⁷³⁸⁸ is an apocalyptic number.

197388 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

197388 is an abundant number, since it is smaller than the sum of its proper divisors (301656).

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

197388 is a wasteful number, since it uses less digits than its factorization.

197388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5493 (or 5488 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 197388 is about 444.2836931511. The cubic root of 197388 is about 58.2246538835.

It can be divided in two parts, 197 and 388, that added together give a palindrome (585).

The spelling of 197388 in words is "one hundred ninety-seven thousand, three hundred eighty-eight".