171428589 has 16 divisors (see below), whose sum is σ = 254923200. Its totient is φ = 113856048.

The previous prime is 171428581. The next prime is 171428611. The reversal of 171428589 is 985824171.

171428589 is a `hidden beast` number, since 171 + 428 + 58 + 9 = 666.

It is not a de Polignac number, because 171428589 - 2³ = 171428581 is a prime.

It is a super-2 number, since 2×171428589² = 58775522253061842, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171428581) 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, 4539 + ... + 19064.

It is an arithmetic number, because the mean of its divisors is an integer number (15932700).

Almost surely, 2^171428589 is an apocalyptic number.

It is an amenable number.

171428589 is a deficient number, since it is larger than the sum of its proper divisors (83494611).

171428589 is a wasteful number, since it uses less digits than its factorization.

171428589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23881 (or 23875 counting only the distinct ones).

The product of its digits is 161280, while the sum is 45.

The square root of 171428589 is about 13093.0740851795. The cubic root of 171428589 is about 555.5132432679.

It can be divided in two parts, 1714 and 28589, that added together give a palindrome (30303).

The spelling of 171428589 in words is "one hundred seventy-one million, four hundred twenty-eight thousand, five hundred eighty-nine".