11855128 has 8 divisors (see below), whose sum is σ = 22228380. Its totient is φ = 5927560.

The previous prime is 11855111. The next prime is 11855141. The reversal of 11855128 is 82155811.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 11855128.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 740938 + ... + 740953.

Almost surely, 2^11855128 is an apocalyptic number.

It is an amenable number.

11855128 is a deficient number, since it is larger than the sum of its proper divisors (10373252).

11855128 is a wasteful number, since it uses less digits than its factorization.

11855128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1481897 (or 1481893 counting only the distinct ones).

The product of its digits is 3200, while the sum is 31.

The square root of 11855128 is about 3443.1276479387. The cubic root of 11855128 is about 228.0177989593.

The spelling of 11855128 in words is "eleven million, eight hundred fifty-five thousand, one hundred twenty-eight".