172134186 has 48 divisors (see below), whose sum is σ = 415283904. Its totient is φ = 46588608.

The previous prime is 172134181. The next prime is 172134223. The reversal of 172134186 is 681431271.

It is not an unprimeable number, because it can be changed into a prime (172134181) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9486 + ... + 20838.

It is an arithmetic number, because the mean of its divisors is an integer number (8651748).

Almost surely, 2^172134186 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172134186, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207641952).

172134186 is an abundant number, since it is smaller than the sum of its proper divisors (243149718).

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

172134186 is a wasteful number, since it uses less digits than its factorization.

172134186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11403 (or 11384 counting only the distinct ones).

The product of its digits is 8064, while the sum is 33.

The square root of 172134186 is about 13119.9918445097. The cubic root of 172134186 is about 556.2743608234.

The spelling of 172134186 in words is "one hundred seventy-two million, one hundred thirty-four thousand, one hundred eighty-six".