128679794 has 8 divisors (see below), whose sum is σ = 193071360. Its totient is φ = 64322676.

The previous prime is 128679787. The next prime is 128679823. The reversal of 128679794 is 497976821.

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

It is an unprimeable number.

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, 5087 + ... + 16829.

It is an arithmetic number, because the mean of its divisors is an integer number (24133920).

Almost surely, 2^128679794 is an apocalyptic number.

128679794 is a deficient number, since it is larger than the sum of its proper divisors (64391566).

128679794 is a wasteful number, since it uses less digits than its factorization.

128679794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17224.

The product of its digits is 1524096, while the sum is 53.

The square root of 128679794 is about 11343.7116500729. The cubic root of 128679794 is about 504.8590189082.

The spelling of 128679794 in words is "one hundred twenty-eight million, six hundred seventy-nine thousand, seven hundred ninety-four".