128336841 has 12 divisors (see below), whose sum is σ = 187609968. Its totient is φ = 84526584.

The previous prime is 128336839. The next prime is 128336851. The reversal of 128336841 is 148633821.

It is not a de Polignac number, because 128336841 - 2¹ = 128336839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128336796 and 128336805.

It is not an unprimeable number, because it can be changed into a prime (128336851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85155 + ... + 86648.

It is an arithmetic number, because the mean of its divisors is an integer number (15634164).

Almost surely, 2^128336841 is an apocalyptic number.

It is an amenable number.

128336841 is a deficient number, since it is larger than the sum of its proper divisors (59273127).

128336841 is a wasteful number, since it uses less digits than its factorization.

128336841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171892 (or 171889 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 128336841 is about 11328.5851278966. The cubic root of 128336841 is about 504.4101088499.

The spelling of 128336841 in words is "one hundred twenty-eight million, three hundred thirty-six thousand, eight hundred forty-one".