1320433344 has 168 divisors, whose sum is σ = 3964301952. Its totient is φ = 419696640.

The previous prime is 1320433339. The next prime is 1320433391. The reversal of 1320433344 is 4433340231.

1320433344 is a `hidden beast` number, since 1 + 320 + 4 + 3 + 334 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1302982 + ... + 1303994.

Almost surely, 2^1320433344 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 1320433344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1982150976).

1320433344 is an abundant number, since it is smaller than the sum of its proper divisors (2643868608).

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

1320433344 is a wasteful number, since it uses less digits than its factorization.

1320433344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135 (or 1122 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

The square root of 1320433344 is about 36337.7674603160. The cubic root of 1320433344 is about 1097.0813381614.

Adding to 1320433344 its reverse (4433340231), we get a palindrome (5753773575).

The spelling of 1320433344 in words is "one billion, three hundred twenty million, four hundred thirty-three thousand, three hundred forty-four".