11771128 has 16 divisors (see below), whose sum is σ = 22275000. Its totient is φ = 5831136.

The previous prime is 11771119. The next prime is 11771131. The reversal of 11771128 is 82117711.

It is a junction number, because it is equal to n+sod(n) for n = 11771096 and 11771105.

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, 5878 + ... + 7621.

Almost surely, 2^11771128 is an apocalyptic number.

It is an amenable number.

11771128 is a deficient number, since it is larger than the sum of its proper divisors (10503872).

11771128 is a wasteful number, since it uses less digits than its factorization.

11771128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13614 (or 13610 counting only the distinct ones).

The product of its digits is 784, while the sum is 28.

The square root of 11771128 is about 3430.9077516016. The cubic root of 11771128 is about 227.4779787887.

Adding to 11771128 its reverse (82117711), we get a palindrome (93888839).

The spelling of 11771128 in words is "eleven million, seven hundred seventy-one thousand, one hundred twenty-eight".