172874429 has 16 divisors (see below), whose sum is σ = 213292800. Its totient is φ = 136442880.

The previous prime is 172874399. The next prime is 172874431. The reversal of 172874429 is 924478271.

It is a de Polignac number, because none of the positive numbers 2^k-172874429 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 172874429.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172874459) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 38744 + ... + 42974.

It is an arithmetic number, because the mean of its divisors is an integer number (13330800).

Almost surely, 2^172874429 is an apocalyptic number.

It is an amenable number.

172874429 is a deficient number, since it is larger than the sum of its proper divisors (40418371).

172874429 is a wasteful number, since it uses less digits than its factorization.

172874429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4700.

The product of its digits is 225792, while the sum is 44.

The square root of 172874429 is about 13148.1720782776. The cubic root of 172874429 is about 557.0706181879.

The spelling of 172874429 in words is "one hundred seventy-two million, eight hundred seventy-four thousand, four hundred twenty-nine".