128484565 has 16 divisors (see below), whose sum is σ = 168583680. Its totient is φ = 93229120.

The previous prime is 128484563. The next prime is 128484613. The reversal of 128484565 is 565484821.

It is not a de Polignac number, because 128484565 - 2¹ = 128484563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128484563) 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 15 ways as a sum of consecutive naturals, for example, 23907 + ... + 28783.

It is an arithmetic number, because the mean of its divisors is an integer number (10536480).

Almost surely, 2^128484565 is an apocalyptic number.

It is an amenable number.

128484565 is a deficient number, since it is larger than the sum of its proper divisors (40099115).

128484565 is a wasteful number, since it uses less digits than its factorization.

128484565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5372.

The product of its digits is 307200, while the sum is 43.

The square root of 128484565 is about 11335.1032196447. The cubic root of 128484565 is about 504.6035708537.

It can be divided in two parts, 1284 and 84565, that added together give a square (85849 = 293²).

The spelling of 128484565 in words is "one hundred twenty-eight million, four hundred eighty-four thousand, five hundred sixty-five".