128485011 has 16 divisors (see below), whose sum is σ = 181760000. Its totient is φ = 80504928.

The previous prime is 128485003. The next prime is 128485033. The reversal of 128485011 is 110584821.

It is a happy number.

It is not a de Polignac number, because 128485011 - 2³ = 128485003 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 128485011.

It is not an unprimeable number, because it can be changed into a prime (128485001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1636 + ... + 16113.

It is an arithmetic number, because the mean of its divisors is an integer number (11360000).

Almost surely, 2^128485011 is an apocalyptic number.

128485011 is a deficient number, since it is larger than the sum of its proper divisors (53274989).

128485011 is a wasteful number, since it uses less digits than its factorization.

128485011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17898.

The product of its (nonzero) digits is 2560, while the sum is 30.

The square root of 128485011 is about 11335.1228930259. The cubic root of 128485011 is about 504.6041547187.

The spelling of 128485011 in words is "one hundred twenty-eight million, four hundred eighty-five thousand, eleven".