128773017 has 16 divisors (see below), whose sum is σ = 190960000. Its totient is φ = 85765392.

The previous prime is 128773009. The next prime is 128773019. The reversal of 128773017 is 710377821.

It is a happy number.

It is not a de Polignac number, because 128773017 - 2³ = 128773009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128773019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40284 + ... + 43362.

It is an arithmetic number, because the mean of its divisors is an integer number (11935000).

Almost surely, 2^128773017 is an apocalyptic number.

It is an amenable number.

128773017 is a deficient number, since it is larger than the sum of its proper divisors (62186983).

128773017 is a wasteful number, since it uses less digits than its factorization.

128773017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4637 (or 4631 counting only the distinct ones).

The product of its (nonzero) digits is 16464, while the sum is 36.

The square root of 128773017 is about 11347.8199227869. The cubic root of 128773017 is about 504.9809057251.

The spelling of 128773017 in words is "one hundred twenty-eight million, seven hundred seventy-three thousand, seventeen".