11911828 has 12 divisors (see below), whose sum is σ = 21097440. Its totient is φ = 5883992.

The previous prime is 11911813. The next prime is 11911829. The reversal of 11911828 is 82811911.

It is a self number, because there is not a number n which added to its sum of digits gives 11911828.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11911829) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 17608 + ... + 18271.

It is an arithmetic number, because the mean of its divisors is an integer number (1758120).

Almost surely, 2^11911828 is an apocalyptic number.

It is an amenable number.

11911828 is a deficient number, since it is larger than the sum of its proper divisors (9185612).

11911828 is a wasteful number, since it uses less digits than its factorization.

11911828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35966 (or 35964 counting only the distinct ones).

The product of its digits is 1152, while the sum is 31.

The square root of 11911828 is about 3451.3516192935. The cubic root of 11911828 is about 228.3807376077.

The spelling of 11911828 in words is "eleven million, nine hundred eleven thousand, eight hundred twenty-eight".