128445335 has 4 divisors (see below), whose sum is σ = 154134408. Its totient is φ = 102756264.

The previous prime is 128445329. The next prime is 128445337. The reversal of 128445335 is 533544821.

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

It is a cyclic number.

It is not a de Polignac number, because 128445335 - 2¹⁶ = 128379799 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128445295 and 128445304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128445337) 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 in 3 ways as a sum of consecutive naturals, for example, 12844529 + ... + 12844538.

It is an arithmetic number, because the mean of its divisors is an integer number (38533602).

Almost surely, 2^128445335 is an apocalyptic number.

128445335 is a deficient number, since it is larger than the sum of its proper divisors (25689073).

128445335 is an equidigital number, since it uses as much as digits as its factorization.

128445335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25689072.

The product of its digits is 57600, while the sum is 35.

The square root of 128445335 is about 11333.3726224809. The cubic root of 128445335 is about 504.5522090081.

The spelling of 128445335 in words is "one hundred twenty-eight million, four hundred forty-five thousand, three hundred thirty-five".