128851745 has 16 divisors (see below), whose sum is σ = 171865152. Its totient is φ = 91940160.

The previous prime is 128851741. The next prime is 128851747. The reversal of 128851745 is 547158821.

It is not a de Polignac number, because 128851745 - 2² = 128851741 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128851741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19187 + ... + 25016.

It is an arithmetic number, because the mean of its divisors is an integer number (10741572).

Almost surely, 2^128851745 is an apocalyptic number.

It is an amenable number.

128851745 is a deficient number, since it is larger than the sum of its proper divisors (43013407).

128851745 is a wasteful number, since it uses less digits than its factorization.

128851745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44272.

The product of its digits is 89600, while the sum is 41.

The square root of 128851745 is about 11351.2882528813. The cubic root of 128851745 is about 505.0837948720.

The spelling of 128851745 in words is "one hundred twenty-eight million, eight hundred fifty-one thousand, seven hundred forty-five".