172528642 has 32 divisors (see below), whose sum is σ = 311129280. Its totient is φ = 70701120.

The previous prime is 172528639. The next prime is 172528663. The reversal of 172528642 is 246825271.

It is a happy number.

It is a super-2 number, since 2×172528642² = 59532264620728328, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5284 + ... + 19312.

It is an arithmetic number, because the mean of its divisors is an integer number (9722790).

Almost surely, 2^172528642 is an apocalyptic number.

172528642 is a deficient number, since it is larger than the sum of its proper divisors (138600638).

172528642 is a wasteful number, since it uses less digits than its factorization.

172528642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14098.

The product of its digits is 53760, while the sum is 37.

The square root of 172528642 is about 13135.0158736105. The cubic root of 172528642 is about 556.6989488890.

The spelling of 172528642 in words is "one hundred seventy-two million, five hundred twenty-eight thousand, six hundred forty-two".