128676446 has 8 divisors (see below), whose sum is σ = 193075680. Its totient is φ = 64317888.

The previous prime is 128676437. The next prime is 128676461. The reversal of 128676446 is 644676821.

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

It is a junction number, because it is equal to n+sod(n) for n = 128676397 and 128676406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 371 + ... + 16046.

It is an arithmetic number, because the mean of its divisors is an integer number (24134460).

Almost surely, 2^128676446 is an apocalyptic number.

128676446 is a deficient number, since it is larger than the sum of its proper divisors (64399234).

128676446 is a wasteful number, since it uses less digits than its factorization.

128676446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20338.

The product of its digits is 387072, while the sum is 44.

The square root of 128676446 is about 11343.5640783662. The cubic root of 128676446 is about 504.8546403843.

The spelling of 128676446 in words is "one hundred twenty-eight million, six hundred seventy-six thousand, four hundred forty-six".