1130320440 has 128 divisors (see below), whose sum is σ = 3775636800. Its totient is φ = 300787200.

The previous prime is 1130320427. The next prime is 1130320483. The reversal of 1130320440 is 440230311.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 756334 + ... + 757826.

Almost surely, 2^1130320440 is an apocalyptic number.

1130320440 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 1130320440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1887818400).

1130320440 is an abundant number, since it is smaller than the sum of its proper divisors (2645316360).

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

1130320440 is a wasteful number, since it uses less digits than its factorization.

1130320440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2214 (or 2204 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1130320440 is about 33620.2385476367. The cubic root of 1130320440 is about 1041.6788834692.

Adding to 1130320440 its reverse (440230311), we get a palindrome (1570550751).

The spelling of 1130320440 in words is "one billion, one hundred thirty million, three hundred twenty thousand, four hundred forty".