128818682 has 8 divisors (see below), whose sum is σ = 198450516. Its totient is φ = 62668512.

The previous prime is 128818661. The next prime is 128818687. The reversal of 128818682 is 286818821.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 100420441 + 28398241 = 10021^2 + 5329^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (128818687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 870323 + ... + 870470.

Almost surely, 2^128818682 is an apocalyptic number.

128818682 is a deficient number, since it is larger than the sum of its proper divisors (69631834).

128818682 is a wasteful number, since it uses less digits than its factorization.

128818682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1740832.

The product of its digits is 98304, while the sum is 44.

The square root of 128818682 is about 11349.8318049212. The cubic root of 128818682 is about 505.0405901433.

The spelling of 128818682 in words is "one hundred twenty-eight million, eight hundred eighteen thousand, six hundred eighty-two".