128355582 has 16 divisors (see below), whose sum is σ = 256958352. Its totient is φ = 42744000.

The previous prime is 128355581. The next prime is 128355611. The reversal of 128355582 is 285553821.

It is a self number, because there is not a number n which added to its sum of digits gives 128355582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128355581) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3169 + ... + 16332.

It is an arithmetic number, because the mean of its divisors is an integer number (16059897).

Almost surely, 2^128355582 is an apocalyptic number.

128355582 is an abundant number, since it is smaller than the sum of its proper divisors (128602770).

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

128355582 is a wasteful number, since it uses less digits than its factorization.

128355582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20603.

The product of its digits is 96000, while the sum is 39.

The square root of 128355582 is about 11329.4122530694. The cubic root of 128355582 is about 504.4346606197.

It can be divided in two parts, 1283 and 55582, that added together give a palindrome (56865).

The spelling of 128355582 in words is "one hundred twenty-eight million, three hundred fifty-five thousand, five hundred eighty-two".