128436908 has 24 divisors (see below), whose sum is σ = 227026800. Its totient is φ = 63576128.

The previous prime is 128436901. The next prime is 128436949. The reversal of 128436908 is 809634821.

It is not an unprimeable number, because it can be changed into a prime (128436901) 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, 306323 + ... + 306741.

It is an arithmetic number, because the mean of its divisors is an integer number (9459450).

Almost surely, 2^128436908 is an apocalyptic number.

It is an amenable number.

128436908 is a deficient number, since it is larger than the sum of its proper divisors (98589892).

128436908 is a wasteful number, since it uses less digits than its factorization.

128436908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009 (or 1007 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 128436908 is about 11333.0008382599. Note that the first 3 decimals coincide. The cubic root of 128436908 is about 504.5411746007.

The spelling of 128436908 in words is "one hundred twenty-eight million, four hundred thirty-six thousand, nine hundred eight".