128266753 has 4 divisors (see below), whose sum is σ = 131733460. Its totient is φ = 124800048.

The previous prime is 128266741. The next prime is 128266757. The reversal of 128266753 is 357662821.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 76527504 + 51739249 = 8748^2 + 7193^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128266753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128266757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1733298 + ... + 1733371.

It is an arithmetic number, because the mean of its divisors is an integer number (32933365).

Almost surely, 2^128266753 is an apocalyptic number.

It is an amenable number.

128266753 is a deficient number, since it is larger than the sum of its proper divisors (3466707).

128266753 is an equidigital number, since it uses as much as digits as its factorization.

128266753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3466706.

The product of its digits is 120960, while the sum is 40.

The square root of 128266753 is about 11325.4912917718. The cubic root of 128266753 is about 504.3182684162.

The spelling of 128266753 in words is "one hundred twenty-eight million, two hundred sixty-six thousand, seven hundred fifty-three".