172936 has 8 divisors (see below), whose sum is σ = 324270. Its totient is φ = 86464.

The previous prime is 172933. The next prime is 172969. The reversal of 172936 is 639271.

It can be written as a sum of positive squares in only one way, i.e., 164836 + 8100 = 406^2 + 90^2 .

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

It is not an unprimeable number, because it can be changed into a prime (172933) by changing a digit.

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 as a sum of consecutive naturals, namely, 10801 + ... + 10816.

2¹⁷²⁹³⁶ is an apocalyptic number.

It is an amenable number.

172936 is a deficient number, since it is larger than the sum of its proper divisors (151334).

172936 is a wasteful number, since it uses less digits than its factorization.

172936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21623 (or 21619 counting only the distinct ones).

The product of its digits is 2268, while the sum is 28.

The square root of 172936 is about 415.8557442191. The cubic root of 172936 is about 55.7136745808.

The spelling of 172936 in words is "one hundred seventy-two thousand, nine hundred thirty-six".