128360380 has 24 divisors (see below), whose sum is σ = 278853120. Its totient is φ = 49573440.

The previous prime is 128360359. The next prime is 128360389. The reversal of 128360380 is 83063821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128360389) 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, 110076 + ... + 111235.

It is an arithmetic number, because the mean of its divisors is an integer number (11618880).

Almost surely, 2^128360380 is an apocalyptic number.

128360380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128360380 is an abundant number, since it is smaller than the sum of its proper divisors (150492740).

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

128360380 is a wasteful number, since it uses less digits than its factorization.

128360380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221349 (or 221347 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 128360380 is about 11329.6240008219. The cubic root of 128360380 is about 504.4409458868.

The spelling of 128360380 in words is "one hundred twenty-eight million, three hundred sixty thousand, three hundred eighty".