128078005 has 8 divisors (see below), whose sum is σ = 167665824. Its totient is φ = 93147600.

The previous prime is 128077991. The next prime is 128078011. The reversal of 128078005 is 500870821.

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

It is not a de Polignac number, because 128078005 - 2¹⁷ = 127946933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1164291 + ... + 1164400.

It is an arithmetic number, because the mean of its divisors is an integer number (20958228).

Almost surely, 2^128078005 is an apocalyptic number.

It is an amenable number.

128078005 is a deficient number, since it is larger than the sum of its proper divisors (39587819).

128078005 is a wasteful number, since it uses less digits than its factorization.

128078005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2328707.

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 128078005 is about 11317.1553404555. The cubic root of 128078005 is about 504.0707743161.

The spelling of 128078005 in words is "one hundred twenty-eight million, seventy-eight thousand, five".