128071958 has 24 divisors (see below), whose sum is σ = 229525968. Its totient is φ = 52498512.

The previous prime is 128071927. The next prime is 128071961. The reversal of 128071958 is 859170821.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1241 + ... + 16052.

It is an arithmetic number, because the mean of its divisors is an integer number (9563582).

Almost surely, 2^128071958 is an apocalyptic number.

128071958 is a deficient number, since it is larger than the sum of its proper divisors (101454010).

128071958 is a wasteful number, since it uses less digits than its factorization.

128071958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17348 (or 17325 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 41.

The square root of 128071958 is about 11316.8881765263. Note that the first 3 decimals coincide. The cubic root of 128071958 is about 504.0628412237.

The spelling of 128071958 in words is "one hundred twenty-eight million, seventy-one thousand, nine hundred fifty-eight".