128310380 has 24 divisors (see below), whose sum is σ = 293947920. Its totient is φ = 46658240.

The previous prime is 128310379. The next prime is 128310383. The reversal of 128310380 is 83013821.

It is not an unprimeable number, because it can be changed into a prime (128310383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 291395 + ... + 291834.

It is an arithmetic number, because the mean of its divisors is an integer number (12247830).

Almost surely, 2^128310380 is an apocalyptic number.

128310380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128310380 is an abundant number, since it is smaller than the sum of its proper divisors (165637540).

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

128310380 is a wasteful number, since it uses less digits than its factorization.

128310380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583249 (or 583247 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 128310380 is about 11327.4171813349. The cubic root of 128310380 is about 504.3754393733.

The spelling of 128310380 in words is "one hundred twenty-eight million, three hundred ten thousand, three hundred eighty".