172136 has 8 divisors (see below), whose sum is σ = 322770. Its totient is φ = 86064.

The previous prime is 172127. The next prime is 172147. The reversal of 172136 is 631271.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 155236 + 16900 = 394^2 + 130^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 172136.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10751 + ... + 10766.

2¹⁷²¹³⁶ is an apocalyptic number.

It is an amenable number.

172136 is a deficient number, since it is larger than the sum of its proper divisors (150634).

172136 is a wasteful number, since it uses less digits than its factorization.

172136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21523 (or 21519 counting only the distinct ones).

The product of its digits is 252, while the sum is 20.

The square root of 172136 is about 414.8927572277. The cubic root of 172136 is about 55.6276314877.

The spelling of 172136 in words is "one hundred seventy-two thousand, one hundred thirty-six".