128170080 has 96 divisors (see below), whose sum is σ = 448610400. Its totient is φ = 34177536.

The previous prime is 128170079. The next prime is 128170117. The reversal of 128170080 is 80071821.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (27).

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 15 ways as a sum of consecutive naturals, for example, 10515 + ... + 19154.

It is an arithmetic number, because the mean of its divisors is an integer number (4673025).

Almost surely, 2^128170080 is an apocalyptic number.

128170080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128170080 is an abundant number, since it is smaller than the sum of its proper divisors (320440320).

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

128170080 is a wasteful number, since it uses less digits than its factorization.

128170080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29693 (or 29679 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 27.

The square root of 128170080 is about 11321.2225488240. Note that the first 3 decimals coincide. The cubic root of 128170080 is about 504.1915371774.

The spelling of 128170080 in words is "one hundred twenty-eight million, one hundred seventy thousand, eighty".