128376580 has 48 divisors (see below), whose sum is σ = 281917440. Its totient is φ = 49046400.

The previous prime is 128376557. The next prime is 128376583. The reversal of 128376580 is 85673821.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (128376583) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47670 + ... + 50290.

It is an arithmetic number, because the mean of its divisors is an integer number (5873280).

Almost surely, 2^128376580 is an apocalyptic number.

128376580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128376580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140958720).

128376580 is an abundant number, since it is smaller than the sum of its proper divisors (153540860).

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

128376580 is a wasteful number, since it uses less digits than its factorization.

128376580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2740 (or 2738 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 128376580 is about 11330.3389181436. The cubic root of 128376580 is about 504.4621663485.

The spelling of 128376580 in words is "one hundred twenty-eight million, three hundred seventy-six thousand, five hundred eighty".