1147303440 has 200 divisors, whose sum is σ = 4026503448. Its totient is φ = 302745600.

The previous prime is 1147303403. The next prime is 1147303441. The reversal of 1147303440 is 443037411.

It can be written as a sum of positive squares in 4 ways, for example, as 104530176 + 1042773264 = 10224^2 + 32292^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1147303441) 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 39 ways as a sum of consecutive naturals, for example, 653604 + ... + 655356.

Almost surely, 2^1147303440 is an apocalyptic number.

1147303440 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 1147303440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2013251724).

1147303440 is an abundant number, since it is smaller than the sum of its proper divisors (2879200008).

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

1147303440 is a wasteful number, since it uses less digits than its factorization.

1147303440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1879 (or 1864 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 1147303440 is about 33871.8679732902. The cubic root of 1147303440 is about 1046.8700259836.

The spelling of 1147303440 in words is "one billion, one hundred forty-seven million, three hundred three thousand, four hundred forty".