128941156 has 12 divisors (see below), whose sum is σ = 229904892. Its totient is φ = 63254048.

The previous prime is 128941147. The next prime is 128941157. The reversal of 128941156 is 651149821.

It can be written as a sum of positive squares in 2 ways, for example, as 37088100 + 91853056 = 6090^2 + 9584^2 .

It is not an unprimeable number, because it can be changed into a prime (128941157) 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 3 ways as a sum of consecutive naturals, for example, 303895 + ... + 304318.

It is an arithmetic number, because the mean of its divisors is an integer number (19158741).

Almost surely, 2^128941156 is an apocalyptic number.

It is an amenable number.

128941156 is a deficient number, since it is larger than the sum of its proper divisors (100963736).

128941156 is a wasteful number, since it uses less digits than its factorization.

128941156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608270 (or 608268 counting only the distinct ones).

The product of its digits is 17280, while the sum is 37.

The square root of 128941156 is about 11355.2259334634. The cubic root of 128941156 is about 505.2005947534.

The spelling of 128941156 in words is "one hundred twenty-eight million, nine hundred forty-one thousand, one hundred fifty-six".