128727067 has 12 divisors (see below), whose sum is σ = 156255696. Its totient is φ = 105539280.

The previous prime is 128727041. The next prime is 128727101. The reversal of 128727067 is 760727821.

It is a de Polignac number, because none of the positive numbers 2^k-128727067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128727037) 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, 55984 + ... + 58237.

It is an arithmetic number, because the mean of its divisors is an integer number (13021308).

Almost surely, 2^128727067 is an apocalyptic number.

128727067 is a deficient number, since it is larger than the sum of its proper divisors (27528629).

128727067 is a wasteful number, since it uses less digits than its factorization.

128727067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114258 (or 114251 counting only the distinct ones).

The product of its (nonzero) digits is 65856, while the sum is 40.

The square root of 128727067 is about 11345.7951241859. The cubic root of 128727067 is about 504.9208345662.

The spelling of 128727067 in words is "one hundred twenty-eight million, seven hundred twenty-seven thousand, sixty-seven".