172787252 has 24 divisors (see below), whose sum is σ = 349272000. Its totient is φ = 73919360.

The previous prime is 172787239. The next prime is 172787257. The reversal of 172787252 is 252787271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172787257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114752 + ... + 116247.

It is an arithmetic number, because the mean of its divisors is an integer number (14553000).

Almost surely, 2^172787252 is an apocalyptic number.

It is an amenable number.

172787252 is an abundant number, since it is smaller than the sum of its proper divisors (176484748).

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

172787252 is a wasteful number, since it uses less digits than its factorization.

172787252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231031 (or 231029 counting only the distinct ones).

The product of its digits is 109760, while the sum is 41.

The square root of 172787252 is about 13144.8564845722. The cubic root of 172787252 is about 556.9769627119.

The spelling of 172787252 in words is "one hundred seventy-two million, seven hundred eighty-seven thousand, two hundred fifty-two".