172287429 has 16 divisors (see below), whose sum is σ = 243540480. Its totient is φ = 108146880.

The previous prime is 172287419. The next prime is 172287431. The reversal of 172287429 is 924782271.

It is not a de Polignac number, because 172287429 - 2⁵ = 172287397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172287419) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 21594 + ... + 28475.

It is an arithmetic number, because the mean of its divisors is an integer number (15221280).

Almost surely, 2^172287429 is an apocalyptic number.

It is an amenable number.

172287429 is a deficient number, since it is larger than the sum of its proper divisors (71253051).

172287429 is a wasteful number, since it uses less digits than its factorization.

172287429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50140.

The product of its digits is 112896, while the sum is 42.

The square root of 172287429 is about 13125.8306022895. The cubic root of 172287429 is about 556.4393868607.

The spelling of 172287429 in words is "one hundred seventy-two million, two hundred eighty-seven thousand, four hundred twenty-nine".