1200080320 has 112 divisors (see below), whose sum is σ = 3130539840. Its totient is φ = 436158464.

The previous prime is 1200080293. The next prime is 1200080341. The reversal of 1200080320 is 230800021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 1200080294 and 1200080303.

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, 153957 + ... + 161563.

Almost surely, 2^1200080320 is an apocalyptic number.

1200080320 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 1200080320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1565269920).

1200080320 is an abundant number, since it is smaller than the sum of its proper divisors (1930459520).

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

1200080320 is a wasteful number, since it uses less digits than its factorization.

1200080320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7670 (or 7660 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1200080320 is about 34642.1754513195. The cubic root of 1200080320 is about 1062.6822777471.

Adding to 1200080320 its reverse (230800021), we get a palindrome (1430880341).

The spelling of 1200080320 in words is "one billion, two hundred million, eighty thousand, three hundred twenty".