128675739 has 8 divisors (see below), whose sum is σ = 173171520. Its totient is φ = 84981896.

The previous prime is 128675719. The next prime is 128675747. The reversal of 128675739 is 937576821.

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

It is a cyclic number.

It is not a de Polignac number, because 128675739 - 2¹¹ = 128673691 is a prime.

It is a super-2 number, since 2×128675739² = 33114891614392242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (128675719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200109 + ... + 200750.

It is an arithmetic number, because the mean of its divisors is an integer number (21646440).

Almost surely, 2^128675739 is an apocalyptic number.

128675739 is a deficient number, since it is larger than the sum of its proper divisors (44495781).

128675739 is a wasteful number, since it uses less digits than its factorization.

128675739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400969.

The product of its digits is 635040, while the sum is 48.

The square root of 128675739 is about 11343.5329152782. The cubic root of 128675739 is about 504.8537157580.

The spelling of 128675739 in words is "one hundred twenty-eight million, six hundred seventy-five thousand, seven hundred thirty-nine".