128363975 has 12 divisors (see below), whose sum is σ = 159640824. Its totient is φ = 102388320.

The previous prime is 128363969. The next prime is 128364011. The reversal of 128363975 is 579363821.

It is not a de Polignac number, because 128363975 - 2¹⁰ = 128362951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1277 + ... + 16073.

It is an arithmetic number, because the mean of its divisors is an integer number (13303402).

Almost surely, 2^128363975 is an apocalyptic number.

128363975 is a deficient number, since it is larger than the sum of its proper divisors (31276849).

128363975 is a wasteful number, since it uses less digits than its factorization.

128363975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15154 (or 15149 counting only the distinct ones).

The product of its digits is 272160, while the sum is 44.

The square root of 128363975 is about 11329.7826545790. The cubic root of 128363975 is about 504.4456551496.

The spelling of 128363975 in words is "one hundred twenty-eight million, three hundred sixty-three thousand, nine hundred seventy-five".