128879064 has 24 divisors (see below), whose sum is σ = 349047660. Its totient is φ = 42959664.

The previous prime is 128879053. The next prime is 128879081. The reversal of 128879064 is 460978821.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 894922 + ... + 895065.

Almost surely, 2^128879064 is an apocalyptic number.

It is an amenable number.

128879064 is an abundant number, since it is smaller than the sum of its proper divisors (220168596).

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

128879064 is a wasteful number, since it uses less digits than its factorization.

128879064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1789999 (or 1789992 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 128879064 is about 11352.4915326989. The cubic root of 128879064 is about 505.1194881130.

The spelling of 128879064 in words is "one hundred twenty-eight million, eight hundred seventy-nine thousand, sixty-four".