128195735 has 4 divisors (see below), whose sum is σ = 153834888. Its totient is φ = 102556584.

The previous prime is 128195729. The next prime is 128195779. The reversal of 128195735 is 537591821.

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 128195735 - 2¹⁶ = 128130199 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128195692 and 128195701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12819569 + ... + 12819578.

It is an arithmetic number, because the mean of its divisors is an integer number (38458722).

Almost surely, 2^128195735 is an apocalyptic number.

128195735 is a deficient number, since it is larger than the sum of its proper divisors (25639153).

128195735 is an equidigital number, since it uses as much as digits as its factorization.

128195735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25639152.

The product of its digits is 75600, while the sum is 41.

The square root of 128195735 is about 11322.3555411407. The cubic root of 128195735 is about 504.2251752177.

The spelling of 128195735 in words is "one hundred twenty-eight million, one hundred ninety-five thousand, seven hundred thirty-five".