172823532 has 48 divisors (see below), whose sum is σ = 461836032. Its totient is φ = 49273920.

The previous prime is 172823531. The next prime is 172823537. The reversal of 172823532 is 235328271.

172823532 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 172823493 and 172823502.

It is not an unprimeable number, because it can be changed into a prime (172823531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43543 + ... + 47345.

It is an arithmetic number, because the mean of its divisors is an integer number (9621584).

Almost surely, 2^172823532 is an apocalyptic number.

172823532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

172823532 is an abundant number, since it is smaller than the sum of its proper divisors (289012500).

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

172823532 is a wasteful number, since it uses less digits than its factorization.

172823532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4358 (or 4356 counting only the distinct ones).

The product of its digits is 20160, while the sum is 33.

The square root of 172823532 is about 13146.2364195993. The cubic root of 172823532 is about 557.0159426517.

The spelling of 172823532 in words is "one hundred seventy-two million, eight hundred twenty-three thousand, five hundred thirty-two".