128089628 has 12 divisors (see below), whose sum is σ = 237342672. Its totient is φ = 60277440.

The previous prime is 128089603. The next prime is 128089673. The reversal of 128089628 is 826980821.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 941768 + ... + 941903.

It is an arithmetic number, because the mean of its divisors is an integer number (19778556).

Almost surely, 2^128089628 is an apocalyptic number.

It is an amenable number.

128089628 is a deficient number, since it is larger than the sum of its proper divisors (109253044).

128089628 is a wasteful number, since it uses less digits than its factorization.

128089628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1883692 (or 1883690 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 44.

The square root of 128089628 is about 11317.6688412411. The cubic root of 128089628 is about 504.0860218922.

The spelling of 128089628 in words is "one hundred twenty-eight million, eighty-nine thousand, six hundred twenty-eight".