128476986 has 16 divisors (see below), whose sum is σ = 280313568. Its totient is φ = 38932400.

The previous prime is 128476981. The next prime is 128477003. The reversal of 128476986 is 689674821.

It is not an unprimeable number, because it can be changed into a prime (128476981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 973245 + ... + 973376.

It is an arithmetic number, because the mean of its divisors is an integer number (17519598).

Almost surely, 2^128476986 is an apocalyptic number.

128476986 is an abundant number, since it is smaller than the sum of its proper divisors (151836582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128476986 is a wasteful number, since it uses less digits than its factorization.

128476986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1946637.

The product of its digits is 1161216, while the sum is 51.

The square root of 128476986 is about 11334.7688992762. The cubic root of 128476986 is about 504.5936488690.

The spelling of 128476986 in words is "one hundred twenty-eight million, four hundred seventy-six thousand, nine hundred eighty-six".