3128684398 has 12 divisors (see below), whose sum is σ = 5459235192. Its totient is φ = 1340864700.

The previous prime is 3128684371. The next prime is 3128684407. The reversal of 3128684398 is 8934868213.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15962578 + ... + 15962773.

It is an arithmetic number, because the mean of its divisors is an integer number (454936266).

Almost surely, 2^3128684398 is an apocalyptic number.

3128684398 is a deficient number, since it is larger than the sum of its proper divisors (2330550794).

3128684398 is a wasteful number, since it uses less digits than its factorization.

3128684398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31925367 (or 31925360 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 52.

The square root of 3128684398 is about 55934.6439874252. The cubic root of 3128684398 is about 1462.5832165179.

The spelling of 3128684398 in words is "three billion, one hundred twenty-eight million, six hundred eighty-four thousand, three hundred ninety-eight".