128716027 has 16 divisors (see below), whose sum is σ = 155146752. Its totient is φ = 105339520.

The previous prime is 128716019. The next prime is 128716031. The reversal of 128716027 is 720617821.

It is a happy number.

It is not a de Polignac number, because 128716027 - 2³ = 128716019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128715983 and 128716001.

It is not an unprimeable number, because it can be changed into a prime (128716067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10663 + ... + 19264.

It is an arithmetic number, because the mean of its divisors is an integer number (9696672).

Almost surely, 2^128716027 is an apocalyptic number.

128716027 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

128716027 is a deficient number, since it is larger than the sum of its proper divisors (26430725).

128716027 is a wasteful number, since it uses less digits than its factorization.

128716027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29978.

The product of its (nonzero) digits is 9408, while the sum is 34.

The square root of 128716027 is about 11345.3085898974. The cubic root of 128716027 is about 504.9063996705.

The spelling of 128716027 in words is "one hundred twenty-eight million, seven hundred sixteen thousand, twenty-seven".