197221476 has 12 divisors (see below), whose sum is σ = 460183472. Its totient is φ = 65740488.

The previous prime is 197221469. The next prime is 197221487. The reversal of 197221476 is 674122791.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8217550 + ... + 8217573.

Almost surely, 2^197221476 is an apocalyptic number.

It is an amenable number.

197221476 is an abundant number, since it is smaller than the sum of its proper divisors (262961996).

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

197221476 is a wasteful number, since it uses less digits than its factorization.

197221476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16435130 (or 16435128 counting only the distinct ones).

The product of its digits is 42336, while the sum is 39.

The square root of 197221476 is about 14043.5563871834. The cubic root of 197221476 is about 582.0827576841.

The spelling of 197221476 in words is "one hundred ninety-seven million, two hundred twenty-one thousand, four hundred seventy-six".