197712172 has 48 divisors (see below), whose sum is σ = 409937920. Its totient is φ = 81648000.

The previous prime is 197712167. The next prime is 197712181. The reversal of 197712172 is 271217791.

It is a happy number.

197712172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×197712172³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 328672 + ... + 329272.

Almost surely, 2^197712172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 197712172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204968960).

197712172 is an abundant number, since it is smaller than the sum of its proper divisors (212225748).

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

197712172 is a wasteful number, since it uses less digits than its factorization.

197712172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022 (or 1020 counting only the distinct ones).

The product of its digits is 12348, while the sum is 37.

The square root of 197712172 is about 14061.0160372571. The cubic root of 197712172 is about 582.5651073253.

The spelling of 197712172 in words is "one hundred ninety-seven million, seven hundred twelve thousand, one hundred seventy-two".