1200020304 has 80 divisors (see below), whose sum is σ = 3601059200. Its totient is φ = 337236480.

The previous prime is 1200020303. The next prime is 1200020351. The reversal of 1200020304 is 4030200021.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 1200020304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200020303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8779 + ... + 49770.

It is an arithmetic number, because the mean of its divisors is an integer number (45013240).

Almost surely, 2^1200020304 is an apocalyptic number.

1200020304 is a gapful number since it is divisible by the number (14) 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 1200020304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1800529600).

1200020304 is an abundant number, since it is smaller than the sum of its proper divisors (2401038896).

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

1200020304 is a wasteful number, since it uses less digits than its factorization.

1200020304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58628 (or 58622 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 1200020304 is about 34641.3092131345. The cubic root of 1200020304 is about 1062.6645625431.

Adding to 1200020304 its reverse (4030200021), we get a palindrome (5230220325).

The spelling of 1200020304 in words is "one billion, two hundred million, twenty thousand, three hundred four".