128584284 has 12 divisors (see below), whose sum is σ = 300030024. Its totient is φ = 42861424.

The previous prime is 128584223. The next prime is 128584331. The reversal of 128584284 is 482485821.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5357667 + ... + 5357690.

It is an arithmetic number, because the mean of its divisors is an integer number (25002502).

Almost surely, 2^128584284 is an apocalyptic number.

It is an amenable number.

128584284 is an abundant number, since it is smaller than the sum of its proper divisors (171445740).

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

128584284 is a wasteful number, since it uses less digits than its factorization.

128584284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10715364 (or 10715362 counting only the distinct ones).

The product of its digits is 163840, while the sum is 42.

The square root of 128584284 is about 11339.5010472243. The cubic root of 128584284 is about 504.7340808268.

It can be divided in two parts, 12 and 8584284, that added together give a triangular number (8584296 = T₄₁₄₃).

The spelling of 128584284 in words is "one hundred twenty-eight million, five hundred eighty-four thousand, two hundred eighty-four".