1320389200 has 120 divisors (see below), whose sum is σ = 3526885376. Its totient is φ = 471744000.

The previous prime is 1320389153. The next prime is 1320389207. The reversal of 1320389200 is 29830231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320389207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 157105 + ... + 165295.

Almost surely, 2^1320389200 is an apocalyptic number.

1320389200 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 1320389200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1763442688).

1320389200 is an abundant number, since it is smaller than the sum of its proper divisors (2206496176).

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

1320389200 is a wasteful number, since it uses less digits than its factorization.

1320389200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8253 (or 8242 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 1320389200 is about 36337.1600431294. The cubic root of 1320389200 is about 1097.0691123523.

The spelling of 1320389200 in words is "one billion, three hundred twenty million, three hundred eighty-nine thousand, two hundred".