128672882 has 18 divisors (see below), whose sum is σ = 209337543. Its totient is φ = 59291232.

The previous prime is 128672857. The next prime is 128672893. The reversal of 128672882 is 288276821.

It can be written as a sum of positive squares in 5 ways, for example, as 6105841 + 122567041 = 2471^2 + 11071^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=8021.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 208238 + ... + 208854.

Almost surely, 2^128672882 is an apocalyptic number.

128672882 is a deficient number, since it is larger than the sum of its proper divisors (80664661).

128672882 is an frugal number, since it uses more digits than its factorization.

128672882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1262 (or 632 counting only the distinct ones).

The product of its digits is 172032, while the sum is 44.

The square root of 128672882 is about 11343.4069837946. The cubic root of 128672882 is about 504.8499792915.

The spelling of 128672882 in words is "one hundred twenty-eight million, six hundred seventy-two thousand, eight hundred eighty-two".