197243730 has 48 divisors (see below), whose sum is σ = 513527040. Its totient is φ = 52527264.

The previous prime is 197243729. The next prime is 197243747. The reversal of 197243730 is 37342791.

197243730 is a `hidden beast` number, since 197 + 2 + 437 + 30 = 666.

197243730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 128749 + ... + 130271.

It is an arithmetic number, because the mean of its divisors is an integer number (10698480).

Almost surely, 2^197243730 is an apocalyptic number.

197243730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

197243730 is an abundant number, since it is smaller than the sum of its proper divisors (316283310).

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

197243730 is a wasteful number, since it uses less digits than its factorization.

197243730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2975 (or 2972 counting only the distinct ones).

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

The square root of 197243730 is about 14044.3486855034. The cubic root of 197243730 is about 582.1046504698.

The spelling of 197243730 in words is "one hundred ninety-seven million, two hundred forty-three thousand, seven hundred thirty".