128738608 has 20 divisors (see below), whose sum is σ = 250253080. Its totient is φ = 64157184.

The previous prime is 128738581. The next prime is 128738611. The reversal of 128738608 is 806837821.

It is a happy 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 3 ways as a sum of consecutive naturals, for example, 8193 + ... + 18016.

It is an arithmetic number, because the mean of its divisors is an integer number (12512654).

Almost surely, 2^128738608 is an apocalyptic number.

It is an amenable number.

128738608 is a deficient number, since it is larger than the sum of its proper divisors (121514472).

128738608 is a wasteful number, since it uses less digits than its factorization.

128738608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26524 (or 26518 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 43.

The square root of 128738608 is about 11346.3037153075. The cubic root of 128738608 is about 504.9359236415.

The spelling of 128738608 in words is "one hundred twenty-eight million, seven hundred thirty-eight thousand, six hundred eight".