1132331440 has 80 divisors (see below), whose sum is σ = 2725450560. Its totient is φ = 437207040.

The previous prime is 1132331351. The next prime is 1132331443. The reversal of 1132331440 is 441332311.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (1132331443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 316381 + ... + 319939.

It is an arithmetic number, because the mean of its divisors is an integer number (34068132).

Almost surely, 2^1132331440 is an apocalyptic number.

1132331440 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 1132331440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1362725280).

1132331440 is an abundant number, since it is smaller than the sum of its proper divisors (1593119120).

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

1132331440 is a wasteful number, since it uses less digits than its factorization.

1132331440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3710 (or 3704 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1132331440 is about 33650.1328377764. The cubic root of 1132331440 is about 1042.2962821767.

Adding to 1132331440 its reverse (441332311), we get a palindrome (1573663751).

The spelling of 1132331440 in words is "one billion, one hundred thirty-two million, three hundred thirty-one thousand, four hundred forty".