128860173 has 16 divisors (see below), whose sum is σ = 205589440. Its totient is φ = 79298352.

The previous prime is 128860157. The next prime is 128860177. The reversal of 128860173 is 371068821.

It is not a de Polignac number, because 128860173 - 2⁴ = 128860157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128860177) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183211 + ... + 183912.

It is an arithmetic number, because the mean of its divisors is an integer number (12849340).

Almost surely, 2^128860173 is an apocalyptic number.

128860173 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

128860173 is a deficient number, since it is larger than the sum of its proper divisors (76729267).

128860173 is a wasteful number, since it uses less digits than its factorization.

128860173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367145 (or 367139 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 128860173 is about 11351.6594822079. The cubic root of 128860173 is about 505.0948068906.

The spelling of 128860173 in words is "one hundred twenty-eight million, eight hundred sixty thousand, one hundred seventy-three".