1320840360 has 192 divisors, whose sum is σ = 4929724800. Its totient is φ = 300446208.

The previous prime is 1320840359. The next prime is 1320840361. The reversal of 1320840360 is 630480231.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1320840359) and next prime (1320840361).

It is not an unprimeable number, because it can be changed into a prime (1320840361) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 570886 + ... + 573194.

It is an arithmetic number, because the mean of its divisors is an integer number (25675650).

Almost surely, 2^1320840360 is an apocalyptic number.

1320840360 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 1320840360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2464862400).

1320840360 is an abundant number, since it is smaller than the sum of its proper divisors (3608884440).

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

1320840360 is a wasteful number, since it uses less digits than its factorization.

1320840360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2560 (or 2553 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 1320840360 is about 36343.3674829397. The cubic root of 1320840360 is about 1097.1940495900.

The spelling of 1320840360 in words is "one billion, three hundred twenty million, eight hundred forty thousand, three hundred sixty".