1320104440 has 64 divisors (see below), whose sum is σ = 2998596960. Its totient is φ = 523031040.

The previous prime is 1320104437. The next prime is 1320104453. The reversal of 1320104440 is 444010231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3135430 + ... + 3135850.

Almost surely, 2^1320104440 is an apocalyptic number.

1320104440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320104440 is an abundant number, since it is smaller than the sum of its proper divisors (1678492520).

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

1320104440 is a wasteful number, since it uses less digits than its factorization.

1320104440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 992 (or 988 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1320104440 is about 36333.2415289360. The cubic root of 1320104440 is about 1096.9902406931.

Adding to 1320104440 its reverse (444010231), we get a palindrome (1764114671).

The spelling of 1320104440 in words is "one billion, three hundred twenty million, one hundred four thousand, four hundred forty".