128765622 has 16 divisors (see below), whose sum is σ = 271085760. Its totient is φ = 40662792.

The previous prime is 128765621. The next prime is 128765627. The reversal of 128765622 is 226567821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128765621) 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, 564648 + ... + 564875.

It is an arithmetic number, because the mean of its divisors is an integer number (16942860).

Almost surely, 2^128765622 is an apocalyptic number.

128765622 is an abundant number, since it is smaller than the sum of its proper divisors (142320138).

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

128765622 is a wasteful number, since it uses less digits than its factorization.

128765622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1129547.

The product of its digits is 80640, while the sum is 39.

The square root of 128765622 is about 11347.4940845986. The cubic root of 128765622 is about 504.9712390901.

The spelling of 128765622 in words is "one hundred twenty-eight million, seven hundred sixty-five thousand, six hundred twenty-two".