128308675 has 24 divisors (see below), whose sum is σ = 175145040. Its totient is φ = 92467200.

The previous prime is 128308667. The next prime is 128308679. The reversal of 128308675 is 576803821.

It is not a de Polignac number, because 128308675 - 2³ = 128308667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128308679) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29011 + ... + 33139.

It is an arithmetic number, because the mean of its divisors is an integer number (7297710).

Almost surely, 2^128308675 is an apocalyptic number.

128308675 is a deficient number, since it is larger than the sum of its proper divisors (46836365).

128308675 is a wasteful number, since it uses less digits than its factorization.

128308675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4263 (or 4258 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 128308675 is about 11327.3419212099. The cubic root of 128308675 is about 504.3732053012.

It can be divided in two parts, 128 and 308675, that added together give a palindrome (308803).

The spelling of 128308675 in words is "one hundred twenty-eight million, three hundred eight thousand, six hundred seventy-five".