197224644 has 12 divisors (see below), whose sum is σ = 460190864. Its totient is φ = 65741544.

The previous prime is 197224631. The next prime is 197224691. The reversal of 197224644 is 446422791.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8217682 + ... + 8217705.

Almost surely, 2^197224644 is an apocalyptic number.

It is an amenable number.

197224644 is an abundant number, since it is smaller than the sum of its proper divisors (262966220).

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

197224644 is a wasteful number, since it uses less digits than its factorization.

197224644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16435394 (or 16435392 counting only the distinct ones).

The product of its digits is 96768, while the sum is 39.

The square root of 197224644 is about 14043.6691786726. The cubic root of 197224644 is about 582.0858743634.

The spelling of 197224644 in words is "one hundred ninety-seven million, two hundred twenty-four thousand, six hundred forty-four".