128795808 has 48 divisors (see below), whose sum is σ = 357981120. Its totient is φ = 40406016.

The previous prime is 128795803. The next prime is 128795819. The reversal of 128795808 is 808597821.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (128795803) 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, 37828 + ... + 41091.

It is an arithmetic number, because the mean of its divisors is an integer number (7457940).

Almost surely, 2^128795808 is an apocalyptic number.

It is an amenable number.

128795808 is an abundant number, since it is smaller than the sum of its proper divisors (229185312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128795808 is a wasteful number, since it uses less digits than its factorization.

128795808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78949 (or 78941 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 48.

The square root of 128795808 is about 11348.8240800534. The cubic root of 128795808 is about 505.0106954569.

The spelling of 128795808 in words is "one hundred twenty-eight million, seven hundred ninety-five thousand, eight hundred eight".