1171992 has 32 divisors (see below), whose sum is σ = 2995200. Its totient is φ = 381984.

The previous prime is 1171991. The next prime is 1171999. The reversal of 1171992 is 2991711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1171991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 609 + ... + 1647.

It is an arithmetic number, because the mean of its divisors is an integer number (93600).

2^1171992 is an apocalyptic number.

1171992 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 1171992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1497600).

1171992 is an abundant number, since it is smaller than the sum of its proper divisors (1823208).

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

1171992 is a wasteful number, since it uses less digits than its factorization.

1171992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095 (or 1091 counting only the distinct ones).

The product of its digits is 1134, while the sum is 30.

The square root of 1171992 is about 1082.5857933670. The cubic root of 1171992 is about 105.4325917258.

It can be divided in two parts, 11719 and 92, that added together give a palindrome (11811).

The spelling of 1171992 in words is "one million, one hundred seventy-one thousand, nine hundred ninety-two".