1117992 has 32 divisors (see below), whose sum is σ = 2872800. Its totient is φ = 362304.

The previous prime is 1117973. The next prime is 1117993. The reversal of 1117992 is 2997111.

It is a super-2 number, since 2×1117992² = 2499812224128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1117993) 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, 259 + ... + 1517.

It is an arithmetic number, because the mean of its divisors is an integer number (89775).

2^1117992 is an apocalyptic number.

1117992 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 1117992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1436400).

1117992 is an abundant number, since it is smaller than the sum of its proper divisors (1754808).

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

1117992 is a wasteful number, since it uses less digits than its factorization.

1117992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305 (or 1301 counting only the distinct ones).

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

The square root of 1117992 is about 1057.3514080002. The cubic root of 1117992 is about 103.7877822426.

The spelling of 1117992 in words is "one million, one hundred seventeen thousand, nine hundred ninety-two".