197181240 has 128 divisors (see below), whose sum is σ = 627264000. Its totient is φ = 49448448.

The previous prime is 197181239. The next prime is 197181241. The reversal of 197181240 is 42181791.

197181240 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (197181239) and next prime (197181241).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197181241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 448941 + ... + 449379.

It is an arithmetic number, because the mean of its divisors is an integer number (4900500).

Almost surely, 2^197181240 is an apocalyptic number.

197181240 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 197181240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (313632000).

197181240 is an abundant number, since it is smaller than the sum of its proper divisors (430082760).

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

197181240 is a wasteful number, since it uses less digits than its factorization.

197181240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669 (or 665 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 33.

The square root of 197181240 is about 14042.1237709970. The cubic root of 197181240 is about 582.0431705911.

The spelling of 197181240 in words is "one hundred ninety-seven million, one hundred eighty-one thousand, two hundred forty".