128008745 has 8 divisors (see below), whose sum is σ = 154224000. Its totient is φ = 101998000.

The previous prime is 128008739. The next prime is 128008753. The reversal of 128008745 is 547800821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 128008745 - 2⁴ = 128008729 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49745 + ... + 52254.

It is an arithmetic number, because the mean of its divisors is an integer number (19278000).

Almost surely, 2^128008745 is an apocalyptic number.

It is an amenable number.

128008745 is a deficient number, since it is larger than the sum of its proper divisors (26215255).

128008745 is a wasteful number, since it uses less digits than its factorization.

128008745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102255.

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 128008745 is about 11314.0949704340. The cubic root of 128008745 is about 503.9798967899.

The spelling of 128008745 in words is "one hundred twenty-eight million, eight thousand, seven hundred forty-five".