128259485 has 8 divisors (see below), whose sum is σ = 155766240. Its totient is φ = 101371024.

The previous prime is 128259479. The next prime is 128259487. The reversal of 128259485 is 584952821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 128259485 - 2¹⁸ = 127997341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128259487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154115 + ... + 154944.

It is an arithmetic number, because the mean of its divisors is an integer number (19470780).

Almost surely, 2^128259485 is an apocalyptic number.

It is an amenable number.

128259485 is a deficient number, since it is larger than the sum of its proper divisors (27506755).

128259485 is an equidigital number, since it uses as much as digits as its factorization.

128259485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309147.

The product of its digits is 230400, while the sum is 44.

The square root of 128259485 is about 11325.1704181438. The cubic root of 128259485 is about 504.3087428135.

The spelling of 128259485 in words is "one hundred twenty-eight million, two hundred fifty-nine thousand, four hundred eighty-five".