128236844 has 6 divisors (see below), whose sum is σ = 224414484. Its totient is φ = 64118420.

The previous prime is 128236841. The next prime is 128236859. The reversal of 128236844 is 448632821.

128236844 is nontrivially palindromic in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 128236798 and 128236807.

It is not an unprimeable number, because it can be changed into a prime (128236841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16029602 + ... + 16029609.

It is an arithmetic number, because the mean of its divisors is an integer number (37402414).

Almost surely, 2^128236844 is an apocalyptic number.

It is an amenable number.

128236844 is a deficient number, since it is larger than the sum of its proper divisors (96177640).

128236844 is a wasteful number, since it uses less digits than its factorization.

128236844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32059215 (or 32059213 counting only the distinct ones).

The product of its digits is 73728, while the sum is 38.

The square root of 128236844 is about 11324.1707864196. The cubic root of 128236844 is about 504.2790667076.

The spelling of 128236844 in words is "one hundred twenty-eight million, two hundred thirty-six thousand, eight hundred forty-four".