172129648 has 10 divisors (see below), whose sum is σ = 333501224. Its totient is φ = 86064816.

The previous prime is 172129613. The next prime is 172129669. The reversal of 172129648 is 846921271.

It is a self number, because there is not a number n which added to its sum of digits gives 172129648.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5379036 + ... + 5379067.

Almost surely, 2^172129648 is an apocalyptic number.

It is an amenable number.

172129648 is a deficient number, since it is larger than the sum of its proper divisors (161371576).

172129648 is a wasteful number, since it uses less digits than its factorization.

172129648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10758111 (or 10758105 counting only the distinct ones).

The product of its digits is 48384, while the sum is 40.

The square root of 172129648 is about 13119.8189011891. The cubic root of 172129648 is about 556.2694723983.

It can be divided in two parts, 1721296 and 48, that added together give a square (1721344 = 1312²).

The spelling of 172129648 in words is "one hundred seventy-two million, one hundred twenty-nine thousand, six hundred forty-eight".