128558485 has 16 divisors (see below), whose sum is σ = 168628032. Its totient is φ = 93312000.

The previous prime is 128558473. The next prime is 128558497. The reversal of 128558485 is 584855821.

It is an interprime number because it is at equal distance from previous prime (128558473) and next prime (128558497).

It is not a de Polignac number, because 128558485 - 2⁷ = 128558357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29710 + ... + 33760.

It is an arithmetic number, because the mean of its divisors is an integer number (10539252).

Almost surely, 2^128558485 is an apocalyptic number.

It is an amenable number.

128558485 is a deficient number, since it is larger than the sum of its proper divisors (40069547).

128558485 is a wasteful number, since it uses less digits than its factorization.

128558485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4644.

The product of its digits is 512000, while the sum is 46.

The square root of 128558485 is about 11338.3634180599. The cubic root of 128558485 is about 504.7003221509.

The spelling of 128558485 in words is "one hundred twenty-eight million, five hundred fifty-eight thousand, four hundred eighty-five".