128628104 has 16 divisors (see below), whose sum is σ = 263103120. Its totient is φ = 58467280.

The previous prime is 128628091. The next prime is 128628107. The reversal of 128628104 is 401826821.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (128628107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 730754 + ... + 730929.

It is an arithmetic number, because the mean of its divisors is an integer number (16443945).

Almost surely, 2^128628104 is an apocalyptic number.

It is an amenable number.

128628104 is an abundant number, since it is smaller than the sum of its proper divisors (134475016).

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

128628104 is a wasteful number, since it uses less digits than its factorization.

128628104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1461700 (or 1461696 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 128628104 is about 11341.4330664163. The cubic root of 128628104 is about 504.7914101125.

The spelling of 128628104 in words is "one hundred twenty-eight million, six hundred twenty-eight thousand, one hundred four".