1320216450 has 192 divisors, whose sum is σ = 3861181440. Its totient is φ = 292320000.

The previous prime is 1320216431. The next prime is 1320216451. The reversal of 1320216450 is 546120231.

It is a super-3 number, since 3×1320216450³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1320216450.

It is not an unprimeable number, because it can be changed into a prime (1320216451) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6256845 + ... + 6257055.

It is an arithmetic number, because the mean of its divisors is an integer number (20110320).

Almost surely, 2^1320216450 is an apocalyptic number.

1320216450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1320216450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1930590720).

1320216450 is an abundant number, since it is smaller than the sum of its proper divisors (2540964990).

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

1320216450 is a wasteful number, since it uses less digits than its factorization.

1320216450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393 (or 388 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1320216450 is about 36334.7829221533. The cubic root of 1320216450 is about 1097.0212661175.

Adding to 1320216450 its reverse (546120231), we get a palindrome (1866336681).

The spelling of 1320216450 in words is "one billion, three hundred twenty million, two hundred sixteen thousand, four hundred fifty".