11191992 has 96 divisors (see below), whose sum is σ = 33707520. Its totient is φ = 3084480.

The previous prime is 11191991. The next prime is 11191993. The reversal of 11191992 is 29919111.

11191992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11191991) and next prime (11191993).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11191991) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36303 + ... + 36609.

It is an arithmetic number, because the mean of its divisors is an integer number (351120).

Almost surely, 2^11191992 is an apocalyptic number.

11191992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11191992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16853760).

11191992 is an abundant number, since it is smaller than the sum of its proper divisors (22515528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11191992 is a wasteful number, since it uses less digits than its factorization.

11191992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361 (or 350 counting only the distinct ones).

The product of its digits is 1458, while the sum is 33.

The square root of 11191992 is about 3345.4434683611. The cubic root of 11191992 is about 223.6844515294.

The spelling of 11191992 in words is "eleven million, one hundred ninety-one thousand, nine hundred ninety-two".