128568403 has 8 divisors (see below), whose sum is σ = 131026176. Its totient is φ = 126129600.

The previous prime is 128568389. The next prime is 128568449. The reversal of 128568403 is 304865821.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 128568403 - 2²¹ = 126471251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128568203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9333 + ... + 18553.

It is an arithmetic number, because the mean of its divisors is an integer number (16378272).

Almost surely, 2^128568403 is an apocalyptic number.

128568403 is a deficient number, since it is larger than the sum of its proper divisors (2457773).

128568403 is an equidigital number, since it uses as much as digits as its factorization.

128568403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9485.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 128568403 is about 11338.8007743324. The cubic root of 128568403 is about 504.7133006514.

The spelling of 128568403 in words is "one hundred twenty-eight million, five hundred sixty-eight thousand, four hundred three".