172190 has 16 divisors (see below), whose sum is σ = 315792. Its totient is φ = 67584.

The previous prime is 172181. The next prime is 172199. The reversal of 172190 is 91271.

It is an interprime number because it is at equal distance from previous prime (172181) and next prime (172199).

It is a super-2 number, since 2×172190² = 59298792200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172199) by changing a digit.

172190 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 542 + ... + 798.

It is an arithmetic number, because the mean of its divisors is an integer number (19737).

2¹⁷²¹⁹⁰ is an apocalyptic number.

172190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172190 is a deficient number, since it is larger than the sum of its proper divisors (143602).

172190 is a wasteful number, since it uses less digits than its factorization.

172190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331.

The product of its (nonzero) digits is 126, while the sum is 20.

The square root of 172190 is about 414.9578291827. The cubic root of 172190 is about 55.6334477764.

The spelling of 172190 in words is "one hundred seventy-two thousand, one hundred ninety".