1130440 has 32 divisors (see below), whose sum is σ = 2592000. Its totient is φ = 443584.

The previous prime is 1130431. The next prime is 1130447. The reversal of 1130440 is 440311.

It is a super-3 number, since 3×1130440³ = 4333749493167552000, which contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1130440.

It is not an unprimeable number, because it can be changed into a prime (1130447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2121 + ... + 2599.

It is an arithmetic number, because the mean of its divisors is an integer number (81000).

2^1130440 is an apocalyptic number.

1130440 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 1130440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1296000).

1130440 is an abundant number, since it is smaller than the sum of its proper divisors (1461560).

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

1130440 is a wasteful number, since it uses less digits than its factorization.

1130440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549 (or 545 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1130440 is about 1063.2215197220. The cubic root of 1130440 is about 104.1715610145.

Adding to 1130440 its reverse (440311), we get a palindrome (1570751).

The spelling of 1130440 in words is "one million, one hundred thirty thousand, four hundred forty".