128724576 has 48 divisors (see below), whose sum is σ = 339006528. Its totient is φ = 42768000.

The previous prime is 128724571. The next prime is 128724577. The reversal of 128724576 is 675427821.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128724571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29751 + ... + 33801.

It is an arithmetic number, because the mean of its divisors is an integer number (7062636).

Almost surely, 2^128724576 is an apocalyptic number.

128724576 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

128724576 is an abundant number, since it is smaller than the sum of its proper divisors (210281952).

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

128724576 is a wasteful number, since it uses less digits than its factorization.

128724576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4395 (or 4387 counting only the distinct ones).

The product of its digits is 188160, while the sum is 42.

The square root of 128724576 is about 11345.6853473027. The cubic root of 128724576 is about 504.9175776342.

The spelling of 128724576 in words is "one hundred twenty-eight million, seven hundred twenty-four thousand, five hundred seventy-six".