128941544 has 8 divisors (see below), whose sum is σ = 241765410. Its totient is φ = 64470768.

The previous prime is 128941541. The next prime is 128941573. The reversal of 128941544 is 445149821.

It can be written as a sum of positive squares in only one way, i.e., 116424100 + 12517444 = 10790^2 + 3538^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 128941498 and 128941507.

It is not an unprimeable number, because it can be changed into a prime (128941541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8058839 + ... + 8058854.

Almost surely, 2^128941544 is an apocalyptic number.

It is an amenable number.

128941544 is a deficient number, since it is larger than the sum of its proper divisors (112823866).

128941544 is a wasteful number, since it uses less digits than its factorization.

128941544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16117699 (or 16117695 counting only the distinct ones).

The product of its digits is 46080, while the sum is 38.

The square root of 128941544 is about 11355.2430180952. The cubic root of 128941544 is about 505.2011014901.

The spelling of 128941544 in words is "one hundred twenty-eight million, nine hundred forty-one thousand, five hundred forty-four".