128071930 has 64 divisors (see below), whose sum is σ = 271600128. Its totient is φ = 42577920.

The previous prime is 128071927. The next prime is 128071961. The reversal of 128071930 is 39170821.

It is a junction number, because it is equal to n+sod(n) for n = 128071892 and 128071901.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 362634 + ... + 362986.

It is an arithmetic number, because the mean of its divisors is an integer number (4243752).

Almost surely, 2^128071930 is an apocalyptic number.

128071930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128071930 is an abundant number, since it is smaller than the sum of its proper divisors (143528198).

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

128071930 is a wasteful number, since it uses less digits than its factorization.

128071930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 128071930 is about 11316.8869394370. The cubic root of 128071930 is about 504.0628044898.

The spelling of 128071930 in words is "one hundred twenty-eight million, seventy-one thousand, nine hundred thirty".