128471585 has 16 divisors (see below), whose sum is σ = 172729152. Its totient is φ = 90907200.

The previous prime is 128471561. The next prime is 128471587. The reversal of 128471585 is 585174821.

It is not a de Polignac number, because 128471585 - 2¹⁸ = 128209441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128471587) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 29531 + ... + 33600.

It is an arithmetic number, because the mean of its divisors is an integer number (10795572).

Almost surely, 2^128471585 is an apocalyptic number.

It is an amenable number.

128471585 is a deficient number, since it is larger than the sum of its proper divisors (44257567).

128471585 is a wasteful number, since it uses less digits than its factorization.

128471585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63184.

The product of its digits is 89600, while the sum is 41.

The square root of 128471585 is about 11334.5306475390. The cubic root of 128471585 is about 504.5865779567.

The spelling of 128471585 in words is "one hundred twenty-eight million, four hundred seventy-one thousand, five hundred eighty-five".