128791367 has 8 divisors (see below), whose sum is σ = 135674160. Its totient is φ = 121919040.

The previous prime is 128791331. The next prime is 128791381. The reversal of 128791367 is 763197821.

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

It is a cyclic number.

It is not a de Polignac number, because 128791367 - 2⁸ = 128791111 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 (128791307) 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, 45617 + ... + 48357.

It is an arithmetic number, because the mean of its divisors is an integer number (16959270).

Almost surely, 2^128791367 is an apocalyptic number.

128791367 is a deficient number, since it is larger than the sum of its proper divisors (6882793).

128791367 is a wasteful number, since it uses less digits than its factorization.

128791367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5233.

The product of its digits is 127008, while the sum is 44.

The square root of 128791367 is about 11348.6284193289. The cubic root of 128791367 is about 505.0048909764.

The spelling of 128791367 in words is "one hundred twenty-eight million, seven hundred ninety-one thousand, three hundred sixty-seven".