197539238 has 32 divisors (see below), whose sum is σ = 339746400. Its totient is φ = 85383936.

The previous prime is 197539231. The next prime is 197539273. The reversal of 197539238 is 832935791.

It is a junction number, because it is equal to n+sod(n) for n = 197539192 and 197539201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197539231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41720 + ... + 46212.

It is an arithmetic number, because the mean of its divisors is an integer number (10617075).

Almost surely, 2^197539238 is an apocalyptic number.

197539238 is a deficient number, since it is larger than the sum of its proper divisors (142207162).

197539238 is a wasteful number, since it uses less digits than its factorization.

197539238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4616.

The product of its digits is 408240, while the sum is 47.

The square root of 197539238 is about 14054.8652786144. The cubic root of 197539238 is about 582.3952059636.

It can be divided in two parts, 1975392 and 38, that multiplied together give a square (75064896 = 8664²).

The spelling of 197539238 in words is "one hundred ninety-seven million, five hundred thirty-nine thousand, two hundred thirty-eight".