197663228 has 24 divisors (see below), whose sum is σ = 397953024. Its totient is φ = 84150000.

The previous prime is 197663209. The next prime is 197663231. The reversal of 197663228 is 822366791.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19148 + ... + 27603.

It is an arithmetic number, because the mean of its divisors is an integer number (16581376).

Almost surely, 2^197663228 is an apocalyptic number.

It is an amenable number.

197663228 is an abundant number, since it is smaller than the sum of its proper divisors (200289796).

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

197663228 is a wasteful number, since it uses less digits than its factorization.

197663228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46913 (or 46911 counting only the distinct ones).

The product of its digits is 217728, while the sum is 44.

The square root of 197663228 is about 14059.2755147625. The cubic root of 197663228 is about 582.5170316816.

It can be divided in two parts, 1976 and 63228, that multiplied together give a triangular number (124938528 = T₁₅₈₀₇).

The spelling of 197663228 in words is "one hundred ninety-seven million, six hundred sixty-three thousand, two hundred twenty-eight".