11161992 has 64 divisors (see below), whose sum is σ = 29623680. Its totient is φ = 3497472.

The previous prime is 11161991. The next prime is 11161993. The reversal of 11161992 is 29916111.

It is an interprime number because it is at equal distance from previous prime (11161991) and next prime (11161993).

It is not an unprimeable number, because it can be changed into a prime (11161991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40158 + ... + 40434.

It is an arithmetic number, because the mean of its divisors is an integer number (462870).

Almost surely, 2^11161992 is an apocalyptic number.

11161992 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 11161992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14811840).

11161992 is an abundant number, since it is smaller than the sum of its proper divisors (18461688).

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

11161992 is a wasteful number, since it uses less digits than its factorization.

11161992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382 (or 378 counting only the distinct ones).

The product of its digits is 972, while the sum is 30.

The square root of 11161992 is about 3340.9567491963. The cubic root of 11161992 is about 223.4844115268.

The spelling of 11161992 in words is "eleven million, one hundred sixty-one thousand, nine hundred ninety-two".