128396026 has 8 divisors (see below), whose sum is σ = 210102624. Its totient is φ = 58361820.

The previous prime is 128396011. The next prime is 128396027. The reversal of 128396026 is 620693821.

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

It is not an unprimeable number, because it can be changed into a prime (128396027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2918070 + ... + 2918113.

It is an arithmetic number, because the mean of its divisors is an integer number (26262828).

Almost surely, 2^128396026 is an apocalyptic number.

128396026 is a deficient number, since it is larger than the sum of its proper divisors (81706598).

128396026 is a wasteful number, since it uses less digits than its factorization.

128396026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5836196.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 128396026 is about 11331.1970241453. The cubic root of 128396026 is about 504.4876364044.

The spelling of 128396026 in words is "one hundred twenty-eight million, three hundred ninety-six thousand, twenty-six".