172528247528 has 32 divisors (see below), whose sum is σ = 398142111360. Its totient is φ = 68252932800.

The previous prime is 172528247503. The next prime is 172528247537. The reversal of 172528247528 is 825742825271.

It is a super-2 number, since 2×172528247528² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 172528247528.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118493948 + ... + 118495403.

It is an arithmetic number, because the mean of its divisors is an integer number (12441940980).

Almost surely, 2^172528247528 is an apocalyptic number.

It is an amenable number.

172528247528 is an abundant number, since it is smaller than the sum of its proper divisors (225613863832).

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

172528247528 is a wasteful number, since it uses less digits than its factorization.

172528247528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236989377 (or 236989373 counting only the distinct ones).

The product of its digits is 5017600, while the sum is 53.

The spelling of 172528247528 in words is "one hundred seventy-two billion, five hundred twenty-eight million, two hundred forty-seven thousand, five hundred twenty-eight".