128392480 has 24 divisors (see below), whose sum is σ = 303327612. Its totient is φ = 51356928.

The previous prime is 128392477. The next prime is 128392507. The reversal of 128392480 is 84293821.

It can be written as a sum of positive squares in 2 ways, for example, as 125529616 + 2862864 = 11204^2 + 1692^2 .

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

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 3 ways as a sum of consecutive naturals, for example, 401067 + ... + 401386.

Almost surely, 2^128392480 is an apocalyptic number.

128392480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128392480 is an abundant number, since it is smaller than the sum of its proper divisors (174935132).

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

128392480 is an equidigital number, since it uses as much as digits as its factorization.

128392480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802468 (or 802460 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 128392480 is about 11331.0405523941. The cubic root of 128392480 is about 504.4829921027.

The spelling of 128392480 in words is "one hundred twenty-eight million, three hundred ninety-two thousand, four hundred eighty".