128372575 has 6 divisors (see below), whose sum is σ = 159182024. Its totient is φ = 102698040.

The previous prime is 128372567. The next prime is 128372579. The reversal of 128372575 is 575273821.

It is a happy number.

It is not a de Polignac number, because 128372575 - 2³ = 128372567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128372579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2567427 + ... + 2567476.

Almost surely, 2^128372575 is an apocalyptic number.

128372575 is a deficient number, since it is larger than the sum of its proper divisors (30809449).

128372575 is an equidigital number, since it uses as much as digits as its factorization.

128372575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5134913 (or 5134908 counting only the distinct ones).

The product of its digits is 117600, while the sum is 40.

The square root of 128372575 is about 11330.1621788922. The cubic root of 128372575 is about 504.4569203449.

The spelling of 128372575 in words is "one hundred twenty-eight million, three hundred seventy-two thousand, five hundred seventy-five".