128604786 has 8 divisors (see below), whose sum is σ = 257209584. Its totient is φ = 42868260.

The previous prime is 128604781. The next prime is 128604809. The reversal of 128604786 is 687406821.

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

128604786 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (128604781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10717060 + ... + 10717071.

It is an arithmetic number, because the mean of its divisors is an integer number (32151198).

Almost surely, 2^128604786 is an apocalyptic number.

128604786 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128604786 is a wasteful number, since it uses less digits than its factorization.

128604786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21434136.

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 128604786 is about 11340.4050192222. The cubic root of 128604786 is about 504.7609050179.

The spelling of 128604786 in words is "one hundred twenty-eight million, six hundred four thousand, seven hundred eighty-six".