128446871 has 8 divisors (see below), whose sum is σ = 148222464. Its totient is φ = 109027800.

The previous prime is 128446861. The next prime is 128446909. The reversal of 128446871 is 178644821.

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

It is not a de Polignac number, because 128446871 - 2⁶ = 128446807 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 (128446841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88355 + ... + 89796.

It is an arithmetic number, because the mean of its divisors is an integer number (18527808).

Almost surely, 2^128446871 is an apocalyptic number.

128446871 is a deficient number, since it is larger than the sum of its proper divisors (19775593).

128446871 is a wasteful number, since it uses less digits than its factorization.

128446871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178261.

The product of its digits is 86016, while the sum is 41.

The square root of 128446871 is about 11333.4403867493. The cubic root of 128446871 is about 504.5542202116.

The spelling of 128446871 in words is "one hundred twenty-eight million, four hundred forty-six thousand, eight hundred seventy-one".