197240 has 16 divisors (see below), whose sum is σ = 443880. Its totient is φ = 78880.

The previous prime is 197233. The next prime is 197243. The reversal of 197240 is 42791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2426 + ... + 2505.

2¹⁹⁷²⁴⁰ is an apocalyptic number.

197240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

197240 is an abundant number, since it is smaller than the sum of its proper divisors (246640).

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

197240 is a wasteful number, since it uses less digits than its factorization.

197240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4942 (or 4938 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 197240 is about 444.1171016748. The cubic root of 197240 is about 58.2100981128.

Subtracting from 197240 its reverse (42791), we obtain a square (154449 = 393²).

The spelling of 197240 in words is "one hundred ninety-seven thousand, two hundred forty".