197408 has 24 divisors (see below), whose sum is σ = 403200. Its totient is φ = 95040.

The previous prime is 197389. The next prime is 197419. The reversal of 197408 is 804791.

197408 = T₉₇ + T₉₈ + ... + T₁₂₇.

It is an unprimeable number.

197408 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 893 + ... + 1091.

It is an arithmetic number, because the mean of its divisors is an integer number (16800).

2¹⁹⁷⁴⁰⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 197408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201600).

197408 is an abundant number, since it is smaller than the sum of its proper divisors (205792).

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

197408 is a wasteful number, since it uses less digits than its factorization.

197408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240 (or 232 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 197408 is about 444.3062007220. The cubic root of 197408 is about 58.2266203214.

The spelling of 197408 in words is "one hundred ninety-seven thousand, four hundred eight".