11811992 has 16 divisors (see below), whose sum is σ = 22862400. Its totient is φ = 5715360.

The previous prime is 11811983. The next prime is 11812007. The reversal of 11811992 is 29911811.

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 in 3 ways as a sum of consecutive naturals, for example, 23567 + ... + 24062.

It is an arithmetic number, because the mean of its divisors is an integer number (1428900).

Almost surely, 2^11811992 is an apocalyptic number.

It is an amenable number.

11811992 is a deficient number, since it is larger than the sum of its proper divisors (11050408).

11811992 is a wasteful number, since it uses less digits than its factorization.

11811992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47666 (or 47662 counting only the distinct ones).

The product of its digits is 1296, while the sum is 32.

The square root of 11811992 is about 3436.8578672968. The cubic root of 11811992 is about 227.7409081091.

The spelling of 11811992 in words is "eleven million, eight hundred eleven thousand, nine hundred ninety-two".