128918575 has 6 divisors (see below), whose sum is σ = 159859064. Its totient is φ = 103134840.

The previous prime is 128918563. The next prime is 128918579. The reversal of 128918575 is 575819821.

It is not a de Polignac number, because 128918575 - 2²³ = 120529967 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 (128918579) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2578347 + ... + 2578396.

Almost surely, 2^128918575 is an apocalyptic number.

128918575 is a deficient number, since it is larger than the sum of its proper divisors (30940489).

128918575 is an equidigital number, since it uses as much as digits as its factorization.

128918575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5156753 (or 5156748 counting only the distinct ones).

The product of its digits is 201600, while the sum is 46.

The square root of 128918575 is about 11354.2315900285. The cubic root of 128918575 is about 505.1711017118.

The spelling of 128918575 in words is "one hundred twenty-eight million, nine hundred eighteen thousand, five hundred seventy-five".