128786180 has 48 divisors (see below), whose sum is σ = 286130880. Its totient is φ = 48555648.

The previous prime is 128786179. The next prime is 128786197. The reversal of 128786180 is 81687821.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85514 + ... + 87006.

It is an arithmetic number, because the mean of its divisors is an integer number (5961060).

Almost surely, 2^128786180 is an apocalyptic number.

128786180 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 128786180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143065440).

128786180 is an abundant number, since it is smaller than the sum of its proper divisors (157344700).

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

128786180 is a wasteful number, since it uses less digits than its factorization.

128786180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1748 (or 1746 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 41.

The square root of 128786180 is about 11348.3998872088. The cubic root of 128786180 is about 504.9981112892.

The spelling of 128786180 in words is "one hundred twenty-eight million, seven hundred eighty-six thousand, one hundred eighty".