128445205 has 16 divisors (see below), whose sum is σ = 182229120. Its totient is φ = 85038912.

The previous prime is 128445197. The next prime is 128445221. The reversal of 128445205 is 502544821.

It is not a de Polignac number, because 128445205 - 2³ = 128445197 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 62259 + ... + 64288.

It is an arithmetic number, because the mean of its divisors is an integer number (11389320).

Almost surely, 2^128445205 is an apocalyptic number.

It is an amenable number.

128445205 is a deficient number, since it is larger than the sum of its proper divisors (53783915).

128445205 is a wasteful number, since it uses less digits than its factorization.

128445205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126588.

The product of its (nonzero) digits is 12800, while the sum is 31.

The square root of 128445205 is about 11333.3668872052. The cubic root of 128445205 is about 504.5520387883.

The spelling of 128445205 in words is "one hundred twenty-eight million, four hundred forty-five thousand, two hundred five".