128136888 has 192 divisors, whose sum is σ = 415134720. Its totient is φ = 35251200.

The previous prime is 128136829. The next prime is 128136913. The reversal of 128136888 is 888631821.

128136888 is a `hidden beast` number, since 1 + 281 + 368 + 8 + 8 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 417231 + ... + 417537.

It is an arithmetic number, because the mean of its divisors is an integer number (2162160).

Almost surely, 2^128136888 is an apocalyptic number.

128136888 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128136888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207567360).

128136888 is an abundant number, since it is smaller than the sum of its proper divisors (286997832).

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

128136888 is a wasteful number, since it uses less digits than its factorization.

128136888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378 (or 371 counting only the distinct ones).

The product of its digits is 147456, while the sum is 45.

The square root of 128136888 is about 11319.7565344843. The cubic root of 128136888 is about 504.1480101954.

It can be divided in two parts, 12813 and 6888, that added together give a triangular number (19701 = T₁₉₈).

The spelling of 128136888 in words is "one hundred twenty-eight million, one hundred thirty-six thousand, eight hundred eighty-eight".