128026927 has 4 divisors (see below), whose sum is σ = 146316496. Its totient is φ = 109737360.

The previous prime is 128026897. The next prime is 128026937. The reversal of 128026927 is 729620821.

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 128026927 - 2¹⁵ = 127994159 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 (128026937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9144774 + ... + 9144787.

It is an arithmetic number, because the mean of its divisors is an integer number (36579124).

Almost surely, 2^128026927 is an apocalyptic number.

128026927 is a deficient number, since it is larger than the sum of its proper divisors (18289569).

128026927 is an equidigital number, since it uses as much as digits as its factorization.

128026927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18289568.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 128026927 is about 11314.8984529248. The cubic root of 128026927 is about 504.0037569532.

The spelling of 128026927 in words is "one hundred twenty-eight million, twenty-six thousand, nine hundred twenty-seven".