197628188 has 24 divisors (see below), whose sum is σ = 350567952. Its totient is φ = 97473024.

The previous prime is 197628181. The next prime is 197628269. The reversal of 197628188 is 881826791.

197628188 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197628181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153395 + ... + 154677.

It is an arithmetic number, because the mean of its divisors is an integer number (14606998).

Almost surely, 2^197628188 is an apocalyptic number.

It is an amenable number.

197628188 is a deficient number, since it is larger than the sum of its proper divisors (152939764).

197628188 is a wasteful number, since it uses less digits than its factorization.

197628188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1781 (or 1779 counting only the distinct ones).

The product of its digits is 387072, while the sum is 50.

The square root of 197628188 is about 14058.0293071255. The cubic root of 197628188 is about 582.4826084807.

The spelling of 197628188 in words is "one hundred ninety-seven million, six hundred twenty-eight thousand, one hundred eighty-eight".