207172 has 24 divisors (see below), whose sum is σ = 425600. Its totient is φ = 88200.

The previous prime is 207169. The next prime is 207187. The reversal of 207172 is 271702.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1297 + ... + 1447.

2²⁰⁷¹⁷² 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 207172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212800).

207172 is an abundant number, since it is smaller than the sum of its proper divisors (218428).

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

207172 is a wasteful number, since it uses less digits than its factorization.

207172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 196, while the sum is 19.

The square root of 207172 is about 455.1615097962. The cubic root of 207172 is about 59.1711967260.

Adding to 207172 its reverse (271702), we get a palindrome (478874).

The spelling of 207172 in words is "two hundred seven thousand, one hundred seventy-two", and thus it is an iban number.