128268355 has 16 divisors (see below), whose sum is σ = 164355840. Its totient is φ = 95866848.

The previous prime is 128268353. The next prime is 128268367. The reversal of 128268355 is 553862821.

It is a cyclic number.

It is not a de Polignac number, because 128268355 - 2¹ = 128268353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128268353) 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, 8025 + ... + 17914.

It is an arithmetic number, because the mean of its divisors is an integer number (10272240).

Almost surely, 2^128268355 is an apocalyptic number.

128268355 is a deficient number, since it is larger than the sum of its proper divisors (36087485).

128268355 is a wasteful number, since it uses less digits than its factorization.

128268355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26010.

The product of its digits is 115200, while the sum is 40.

The square root of 128268355 is about 11325.5620169597. The cubic root of 128268355 is about 504.3203679847.

The spelling of 128268355 in words is "one hundred twenty-eight million, two hundred sixty-eight thousand, three hundred fifty-five".