128872788 has 24 divisors (see below), whose sum is σ = 328040160. Its totient is φ = 39052320.

The previous prime is 128872769. The next prime is 128872811. The reversal of 128872788 is 887278821.

It is a super-3 number, since 3×128872788³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 128872788.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 488023 + ... + 488286.

It is an arithmetic number, because the mean of its divisors is an integer number (13668340).

Almost surely, 2^128872788 is an apocalyptic number.

It is an amenable number.

128872788 is an abundant number, since it is smaller than the sum of its proper divisors (199167372).

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

128872788 is a wasteful number, since it uses less digits than its factorization.

128872788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 976327 (or 976325 counting only the distinct ones).

The product of its digits is 802816, while the sum is 51.

The square root of 128872788 is about 11352.2151142409. The cubic root of 128872788 is about 505.1112887430. Note that the first 3 decimals are identical.

It can be divided in two parts, 1288727 and 88, that added together give a triangular number (1288815 = T₁₆₀₅).

The spelling of 128872788 in words is "one hundred twenty-eight million, eight hundred seventy-two thousand, seven hundred eighty-eight".