128485320 has 64 divisors (see below), whose sum is σ = 408136320. Its totient is φ = 32246784.

The previous prime is 128485319. The next prime is 128485339. The reversal of 128485320 is 23584821.

It is an unprimeable number.

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, 29452 + ... + 33531.

It is an arithmetic number, because the mean of its divisors is an integer number (6377130).

Almost surely, 2^128485320 is an apocalyptic number.

128485320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128485320 is an abundant number, since it is smaller than the sum of its proper divisors (279651000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128485320 is a wasteful number, since it uses less digits than its factorization.

128485320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63014 (or 63010 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 128485320 is about 11335.1365232184. The cubic root of 128485320 is about 504.6045592342.

The spelling of 128485320 in words is "one hundred twenty-eight million, four hundred eighty-five thousand, three hundred twenty".