128371320 has 288 divisors, whose sum is σ = 525339360. Its totient is φ = 26611200.

The previous prime is 128371289. The next prime is 128371333. The reversal of 128371320 is 23173821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 304710 + ... + 305130.

It is an arithmetic number, because the mean of its divisors is an integer number (1824095).

Almost surely, 2^128371320 is an apocalyptic number.

128371320 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 128371320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262669680).

128371320 is an abundant number, since it is smaller than the sum of its proper divisors (396968040).

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

128371320 is a wasteful number, since it uses less digits than its factorization.

128371320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467 (or 449 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 128371320 is about 11330.1067956132. The cubic root of 128371320 is about 504.4552764437.

The spelling of 128371320 in words is "one hundred twenty-eight million, three hundred seventy-one thousand, three hundred twenty".