172488 has 16 divisors (see below), whose sum is σ = 431280. Its totient is φ = 57488.

The previous prime is 172441. The next prime is 172489. The reversal of 172488 is 884271.

It is a super-2 number, since 2×172488² = 59504220288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (172489) by changing a digit.

172488 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 in 3 ways as a sum of consecutive naturals, for example, 3570 + ... + 3617.

It is an arithmetic number, because the mean of its divisors is an integer number (26955).

2¹⁷²⁴⁸⁸ is an apocalyptic number.

It is an amenable number.

172488 is an abundant number, since it is smaller than the sum of its proper divisors (258792).

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

172488 is a wasteful number, since it uses less digits than its factorization.

172488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7196 (or 7192 counting only the distinct ones).

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

The square root of 172488 is about 415.3167465923. The cubic root of 172488 is about 55.6655232214.

The spelling of 172488 in words is "one hundred seventy-two thousand, four hundred eighty-eight".