128168788 has 48 divisors (see below), whose sum is σ = 261636480. Its totient is φ = 54348800.

The previous prime is 128168783. The next prime is 128168809. The reversal of 128168788 is 887861821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128168783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39948 + ... + 43036.

It is an arithmetic number, because the mean of its divisors is an integer number (5450760).

Almost surely, 2^128168788 is an apocalyptic number.

It is an amenable number.

128168788 is an abundant number, since it is smaller than the sum of its proper divisors (133467692).

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

128168788 is a wasteful number, since it uses less digits than its factorization.

128168788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3168 (or 3166 counting only the distinct ones).

The product of its digits is 344064, while the sum is 49.

The square root of 128168788 is about 11321.1654877049. The cubic root of 128168788 is about 504.1898430284.

The spelling of 128168788 in words is "one hundred twenty-eight million, one hundred sixty-eight thousand, seven hundred eighty-eight".