128630975 has 12 divisors (see below), whose sum is σ = 174003000. Its totient is φ = 93549600.

The previous prime is 128630941. The next prime is 128630987. The reversal of 128630975 is 579036821.

It is not a de Polignac number, because 128630975 - 2⁶ = 128630911 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 233600 + ... + 234149.

It is an arithmetic number, because the mean of its divisors is an integer number (14500250).

Almost surely, 2^128630975 is an apocalyptic number.

128630975 is a deficient number, since it is larger than the sum of its proper divisors (45372025).

128630975 is a wasteful number, since it uses less digits than its factorization.

128630975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467770 (or 467765 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 128630975 is about 11341.5596370164. The cubic root of 128630975 is about 504.7951657597.

The spelling of 128630975 in words is "one hundred twenty-eight million, six hundred thirty thousand, nine hundred seventy-five".