1320450000 has 120 divisors (see below), whose sum is σ = 4264164576. Its totient is φ = 352080000.

The previous prime is 1320449957. The next prime is 1320450017. The reversal of 1320450000 is 540231.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 145599 + ... + 154401.

Almost surely, 2^1320450000 is an apocalyptic number.

1320450000 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 1320450000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2132082288).

1320450000 is an abundant number, since it is smaller than the sum of its proper divisors (2943714576).

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

1320450000 is an frugal number, since it uses more digits than its factorization.

1320450000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8839 (or 8813 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 1320450000 is about 36337.9966426329. The cubic root of 1320450000 is about 1097.0859510183.

Adding to 1320450000 its reverse (540231), we get a palindrome (1320990231).

The spelling of 1320450000 in words is "one billion, three hundred twenty million, four hundred fifty thousand".