197752240 has 120 divisors (see below), whose sum is σ = 544264272. Its totient is φ = 66608640.

The previous prime is 197752213. The next prime is 197752249. The reversal of 197752240 is 42257791.

It is a self number, because there is not a number n which added to its sum of digits gives 197752240.

It is not an unprimeable number, because it can be changed into a prime (197752249) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 238707 + ... + 239533.

Almost surely, 2^197752240 is an apocalyptic number.

197752240 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 197752240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272132136).

197752240 is an abundant number, since it is smaller than the sum of its proper divisors (346512032).

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

197752240 is a wasteful number, since it uses less digits than its factorization.

197752240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915 (or 902 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 197752240 is about 14062.4407554308. The cubic root of 197752240 is about 582.6044585394.

The spelling of 197752240 in words is "one hundred ninety-seven million, seven hundred fifty-two thousand, two hundred forty".