172520288 has 12 divisors (see below), whose sum is σ = 339649380. Its totient is φ = 86260128.

The previous prime is 172520287. The next prime is 172520311. The reversal of 172520288 is 882025271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172520281) 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 as a sum of consecutive naturals, namely, 2695598 + ... + 2695661.

It is an arithmetic number, because the mean of its divisors is an integer number (28304115).

Almost surely, 2^172520288 is an apocalyptic number.

It is an amenable number.

172520288 is a deficient number, since it is larger than the sum of its proper divisors (167129092).

172520288 is an equidigital number, since it uses as much as digits as its factorization.

172520288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5391269 (or 5391261 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 172520288 is about 13134.6978648159. The cubic root of 172520288 is about 556.6899634475.

The spelling of 172520288 in words is "one hundred seventy-two million, five hundred twenty thousand, two hundred eighty-eight".