11807128 has 16 divisors (see below), whose sum is σ = 22556880. Its totient is φ = 5791968.

The previous prime is 11807123. The next prime is 11807141. The reversal of 11807128 is 82170811.

It is a junction number, because it is equal to n+sod(n) for n = 11807096 and 11807105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11807123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13500 + ... + 14347.

It is an arithmetic number, because the mean of its divisors is an integer number (1409805).

Almost surely, 2^11807128 is an apocalyptic number.

It is an amenable number.

11807128 is a deficient number, since it is larger than the sum of its proper divisors (10749752).

11807128 is a wasteful number, since it uses less digits than its factorization.

11807128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27906 (or 27902 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 28.

The square root of 11807128 is about 3436.1501713400. The cubic root of 11807128 is about 227.7096437279.

Adding to 11807128 its reverse (82170811), we get a palindrome (93977939).

It can be divided in two parts, 11807 and 128, that added together give a triangular number (11935 = T₁₅₄).

The spelling of 11807128 in words is "eleven million, eight hundred seven thousand, one hundred twenty-eight".