128051879 has 8 divisors (see below), whose sum is σ = 133864800. Its totient is φ = 122259456.

The previous prime is 128051873. The next prime is 128051881. The reversal of 128051879 is 978150821.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128051879 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 (128051873) 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, 8447 + ... + 18095.

It is an arithmetic number, because the mean of its divisors is an integer number (16733100).

Almost surely, 2^128051879 is an apocalyptic number.

128051879 is a deficient number, since it is larger than the sum of its proper divisors (5812921).

128051879 is an equidigital number, since it uses as much as digits as its factorization.

128051879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10249.

The product of its (nonzero) digits is 40320, while the sum is 41.

The square root of 128051879 is about 11316.0010162601. The cubic root of 128051879 is about 504.0364976824.

The spelling of 128051879 in words is "one hundred twenty-eight million, fifty-one thousand, eight hundred seventy-nine".