197882172 has 54 divisors (see below), whose sum is σ = 505665888. Its totient is φ = 65246688.

The previous prime is 197882171. The next prime is 197882203. The reversal of 197882172 is 271288791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197882171) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 887253 + ... + 887475.

Almost surely, 2^197882172 is an apocalyptic number.

197882172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

197882172 is an abundant number, since it is smaller than the sum of its proper divisors (307783716).

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

197882172 is a wasteful number, since it uses less digits than its factorization.

197882172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547 (or 385 counting only the distinct ones).

The product of its digits is 112896, while the sum is 45.

The square root of 197882172 is about 14067.0598207301. The cubic root of 197882172 is about 582.7320296007.

The spelling of 197882172 in words is "one hundred ninety-seven million, eight hundred eighty-two thousand, one hundred seventy-two".