1340344224 has 72 divisors (see below), whose sum is σ = 3846662820. Its totient is φ = 442672128.

The previous prime is 1340344223. The next prime is 1340344231. The reversal of 1340344224 is 4224430431.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1326416400 + 13927824 = 36420^2 + 3732^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (1340344223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10044 + ... + 52740.

Almost surely, 2^1340344224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1340344224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1923331410).

1340344224 is an abundant number, since it is smaller than the sum of its proper divisors (2506318596).

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

1340344224 is a wasteful number, since it uses less digits than its factorization.

1340344224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42822 (or 42811 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 1340344224 is about 36610.7118750783. The cubic root of 1340344224 is about 1102.5681658379.

Adding to 1340344224 its reverse (4224430431), we get a palindrome (5564774655).

The spelling of 1340344224 in words is "one billion, three hundred forty million, three hundred forty-four thousand, two hundred twenty-four".