197171320 has 32 divisors (see below), whose sum is σ = 446371920. Its totient is φ = 78382080.

The previous prime is 197171311. The next prime is 197171323. The reversal of 197171320 is 23171791.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197171323) 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, 8601 + ... + 21640.

Almost surely, 2^197171320 is an apocalyptic number.

197171320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

197171320 is an abundant number, since it is smaller than the sum of its proper divisors (249200600).

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

197171320 is a wasteful number, since it uses less digits than its factorization.

197171320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30415 (or 30411 counting only the distinct ones).

The product of its (nonzero) digits is 2646, while the sum is 31.

The square root of 197171320 is about 14041.7705436316. The cubic root of 197171320 is about 582.0334097486.

The spelling of 197171320 in words is "one hundred ninety-seven million, one hundred seventy-one thousand, three hundred twenty".