128361875 has 20 divisors (see below), whose sum is σ = 163166520. Its totient is φ = 100949000.

The previous prime is 128361847. The next prime is 128361887. The reversal of 128361875 is 578163821.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is not a de Polignac number, because 128361875 - 2⁶ = 128361811 is a prime.

Its product of digits (80640) is a multiple of the sum of its prime divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2175596 + ... + 2175654.

It is an arithmetic number, because the mean of its divisors is an integer number (8158326).

Almost surely, 2^128361875 is an apocalyptic number.

128361875 is a deficient number, since it is larger than the sum of its proper divisors (34804645).

128361875 is an frugal number, since it uses more digits than its factorization.

128361875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197 (or 64 counting only the distinct ones).

The product of its digits is 80640, while the sum is 41.

The square root of 128361875 is about 11329.6899781062. The cubic root of 128361875 is about 504.4429042696.

The spelling of 128361875 in words is "one hundred twenty-eight million, three hundred sixty-one thousand, eight hundred seventy-five".