128330380 has 24 divisors (see below), whose sum is σ = 270553248. Its totient is φ = 51130368.

The previous prime is 128330357. The next prime is 128330381. The reversal of 128330380 is 83033821.

It is not an unprimeable number, because it can be changed into a prime (128330381) 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, 7344 + ... + 17623.

It is an arithmetic number, because the mean of its divisors is an integer number (11273052).

Almost surely, 2^128330380 is an apocalyptic number.

128330380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128330380 is an abundant number, since it is smaller than the sum of its proper divisors (142222868).

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

128330380 is a wasteful number, since it uses less digits than its factorization.

128330380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25233 (or 25231 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 128330380 is about 11328.2999607178. The cubic root of 128330380 is about 504.4016440205.

The spelling of 128330380 in words is "one hundred twenty-eight million, three hundred thirty thousand, three hundred eighty".