1166040 has 96 divisors (see below), whose sum is σ = 3931200. Its totient is φ = 299520.
The previous prime is 1166027. The next prime is 1166041. The reversal of 1166040 is 406611.
Added to its reverse (406611) it gives a triangular number (1572651 = T1773).
1166040 = 792 + 802 + ... + 1582.
1166040 is a `hidden beast` number, since 1 + 1 + 660 + 4 + 0 = 666.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1166041) 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, 14721 + ... + 14799.
It is an arithmetic number, because the mean of its divisors is an integer number (40950).
21166040 is an apocalyptic number.
1166040 is a gapful number since it is divisible by the number (10) 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 1166040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1965600).
1166040 is an abundant number, since it is smaller than the sum of its proper divisors (2765160).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1166040 is a wasteful number, since it uses less digits than its factorization.
1166040 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 137 (or 130 counting only the distinct ones).
The product of its (nonzero) digits is 144, while the sum is 18.
The square root of 1166040 is about 1079.8333204713. The cubic root of 1166040 is about 105.2538077660.
Adding to 1166040 its reverse (406611), we get a triangular number (1572651 = T1773).
The spelling of 1166040 in words is "one million, one hundred sixty-six thousand, forty".
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