172884 has 12 divisors (see below), whose sum is σ = 403424. Its totient is φ = 57624.

The previous prime is 172883. The next prime is 172933. The reversal of 172884 is 488271.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7192 + ... + 7215.

2¹⁷²⁸⁸⁴ is an apocalyptic number.

It is an amenable number.

172884 is an abundant number, since it is smaller than the sum of its proper divisors (230540).

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

172884 is a wasteful number, since it uses less digits than its factorization.

172884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14414 (or 14412 counting only the distinct ones).

The product of its digits is 3584, while the sum is 30.

The square root of 172884 is about 415.7932178379. The cubic root of 172884 is about 55.7080898529.

The spelling of 172884 in words is "one hundred seventy-two thousand, eight hundred eighty-four".