11771992 has 8 divisors (see below), whose sum is σ = 22072500. Its totient is φ = 5885992.

The previous prime is 11771983. The next prime is 11772029. The reversal of 11771992 is 29917711.

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

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a magnanimous number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 735742 + ... + 735757.

Almost surely, 2^11771992 is an apocalyptic number.

It is an amenable number.

11771992 is a deficient number, since it is larger than the sum of its proper divisors (10300508).

11771992 is a wasteful number, since it uses less digits than its factorization.

11771992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1471505 (or 1471501 counting only the distinct ones).

The product of its digits is 7938, while the sum is 37.

The square root of 11771992 is about 3431.0336634898. The cubic root of 11771992 is about 227.4835442753.

The spelling of 11771992 in words is "eleven million, seven hundred seventy-one thousand, nine hundred ninety-two".