128860480 has 56 divisors (see below), whose sum is σ = 350690688. Its totient is φ = 44179968.

The previous prime is 128860477. The next prime is 128860481. The reversal of 128860480 is 84068821.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128860481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26524 + ... + 31003.

Almost surely, 2^128860480 is an apocalyptic number.

128860480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128860480 is an abundant number, since it is smaller than the sum of its proper divisors (221830208).

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

128860480 is an equidigital number, since it uses as much as digits as its factorization.

128860480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57551 (or 57541 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 37.

The square root of 128860480 is about 11351.6730044518. The cubic root of 128860480 is about 505.0952080075.

The spelling of 128860480 in words is "one hundred twenty-eight million, eight hundred sixty thousand, four hundred eighty".