197732340 has 240 divisors, whose sum is σ = 687289680. Its totient is φ = 47278080.

The previous prime is 197732323. The next prime is 197732341. The reversal of 197732340 is 43237791.

It can be written as a sum of positive squares in 8 ways, for example, as 15968016 + 181764324 = 3996^2 + 13482^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 197732295 and 197732304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197732341) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 863346 + ... + 863574.

It is an arithmetic number, because the mean of its divisors is an integer number (2863707).

Almost surely, 2^197732340 is an apocalyptic number.

197732340 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 197732340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (343644840).

197732340 is an abundant number, since it is smaller than the sum of its proper divisors (489557340).

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

197732340 is a wasteful number, since it uses less digits than its factorization.

197732340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304 (or 293 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 36.

The square root of 197732340 is about 14061.7331790928. The cubic root of 197732340 is about 582.5849151996.

The spelling of 197732340 in words is "one hundred ninety-seven million, seven hundred thirty-two thousand, three hundred forty".