128368575 has 18 divisors (see below), whose sum is σ = 229922784. Its totient is φ = 68463120.

The previous prime is 128368567. The next prime is 128368607. The reversal of 128368575 is 575863821.

128368575 is a `hidden beast` number, since 12 + 8 + 3 + 68 + 575 = 666.

It is not a de Polignac number, because 128368575 - 2³ = 128368567 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 128368575.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 285039 + ... + 285488.

It is an arithmetic number, because the mean of its divisors is an integer number (12773488).

Almost surely, 2^128368575 is an apocalyptic number.

128368575 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

128368575 is a deficient number, since it is larger than the sum of its proper divisors (101554209).

128368575 is a wasteful number, since it uses less digits than its factorization.

128368575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570543 (or 570535 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The square root of 128368575 is about 11329.9856575373. The cubic root of 128368575 is about 504.4516807817.

The spelling of 128368575 in words is "one hundred twenty-eight million, three hundred sixty-eight thousand, five hundred seventy-five".