128860460 has 24 divisors (see below), whose sum is σ = 271975200. Its totient is φ = 51283584.

The previous prime is 128860453. The next prime is 128860469. The reversal of 128860460 is 64068821.

It is a self number, because there is not a number n which added to its sum of digits gives 128860460.

It is not an unprimeable number, because it can be changed into a prime (128860469) 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 7 ways as a sum of consecutive naturals, for example, 12209 + ... + 20168.

It is an arithmetic number, because the mean of its divisors is an integer number (11332300).

Almost surely, 2^128860460 is an apocalyptic number.

128860460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128860460 is an abundant number, since it is smaller than the sum of its proper divisors (143114740).

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

128860460 is a wasteful number, since it uses less digits than its factorization.

128860460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32585 (or 32583 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 128860460 is about 11351.6721235244. The cubic root of 128860460 is about 505.0951818761.

The spelling of 128860460 in words is "one hundred twenty-eight million, eight hundred sixty thousand, four hundred sixty".