128044005 has 8 divisors (see below), whose sum is σ = 204870432. Its totient is φ = 68290128.

The previous prime is 128044001. The next prime is 128044057. The reversal of 128044005 is 500440821.

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

It is not a de Polignac number, because 128044005 - 2² = 128044001 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128044001) 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, 4268119 + ... + 4268148.

It is an arithmetic number, because the mean of its divisors is an integer number (25608804).

Almost surely, 2^128044005 is an apocalyptic number.

128044005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

128044005 is a deficient number, since it is larger than the sum of its proper divisors (76826427).

128044005 is an equidigital number, since it uses as much as digits as its factorization.

128044005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8536275.

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 128044005 is about 11315.6530964854. The cubic root of 128044005 is about 504.0261662845.

Adding to 128044005 its reverse (500440821), we get a palindrome (628484826).

The spelling of 128044005 in words is "one hundred twenty-eight million, forty-four thousand, five".