128236607 has 4 divisors (see below), whose sum is σ = 128455656. Its totient is φ = 128017560.

The previous prime is 128236601. The next prime is 128236609. The reversal of 128236607 is 706632821.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 128236607 - 2²⁶ = 61127743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128236601) 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 3 ways as a sum of consecutive naturals, for example, 108644 + ... + 109817.

It is an arithmetic number, because the mean of its divisors is an integer number (32113914).

Almost surely, 2^128236607 is an apocalyptic number.

128236607 is a deficient number, since it is larger than the sum of its proper divisors (219049).

128236607 is an equidigital number, since it uses as much as digits as its factorization.

128236607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219048.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 128236607 is about 11324.1603220724. The cubic root of 128236607 is about 504.2787560475.

The spelling of 128236607 in words is "one hundred twenty-eight million, two hundred thirty-six thousand, six hundred seven".