128823546 has 8 divisors (see below), whose sum is σ = 257647104. Its totient is φ = 42941180.

The previous prime is 128823509. The next prime is 128823551. The reversal of 128823546 is 645328821.

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

128823546 is an admirable 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, 10735290 + ... + 10735301.

It is an arithmetic number, because the mean of its divisors is an integer number (32205888).

Almost surely, 2^128823546 is an apocalyptic number.

128823546 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.

128823546 is a wasteful number, since it uses less digits than its factorization.

128823546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21470596.

The product of its digits is 92160, while the sum is 39.

The square root of 128823546 is about 11350.0460792016. The cubic root of 128823546 is about 505.0469465881.

The spelling of 128823546 in words is "one hundred twenty-eight million, eight hundred twenty-three thousand, five hundred forty-six".