172640852 has 24 divisors (see below), whose sum is σ = 317108736. Its totient is φ = 82082528.

The previous prime is 172640813. The next prime is 172640861. The reversal of 172640852 is 258046271.

It is a congruent number.

It is an unprimeable number.

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, 10493 + ... + 21339.

It is an arithmetic number, because the mean of its divisors is an integer number (13212864).

Almost surely, 2^172640852 is an apocalyptic number.

It is an amenable number.

172640852 is a deficient number, since it is larger than the sum of its proper divisors (144467884).

172640852 is a wasteful number, since it uses less digits than its factorization.

172640852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11047 (or 11045 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 172640852 is about 13139.2865864171. The cubic root of 172640852 is about 556.8196122383.

The spelling of 172640852 in words is "one hundred seventy-two million, six hundred forty thousand, eight hundred fifty-two".