128546667 has 12 divisors (see below), whose sum is σ = 188029920. Its totient is φ = 84612528.

The previous prime is 128546657. The next prime is 128546681. The reversal of 128546667 is 766645821.

It is not a de Polignac number, because 128546667 - 2¹⁹ = 128022379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128546657) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89688 + ... + 91109.

It is an arithmetic number, because the mean of its divisors is an integer number (15669160).

Almost surely, 2^128546667 is an apocalyptic number.

128546667 is a deficient number, since it is larger than the sum of its proper divisors (59483253).

128546667 is a wasteful number, since it uses less digits than its factorization.

128546667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180882 (or 180879 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 128546667 is about 11337.8422550325. The cubic root of 128546667 is about 504.6848564760.

The spelling of 128546667 in words is "one hundred twenty-eight million, five hundred forty-six thousand, six hundred sixty-seven".