1200223616 has 64 divisors (see below), whose sum is σ = 2549184000. Its totient is φ = 561240576.

The previous prime is 1200223603. The next prime is 1200223663. The reversal of 1200223616 is 6163220021.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 1200223591 and 1200223600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189005 + ... + 195251.

It is an arithmetic number, because the mean of its divisors is an integer number (39831000).

Almost surely, 2^1200223616 is an apocalyptic number.

1200223616 is a gapful number since it is divisible by the number (16) 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 1200223616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1274592000).

1200223616 is an abundant number, since it is smaller than the sum of its proper divisors (1348960384).

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

1200223616 is an equidigital number, since it uses as much as digits as its factorization.

1200223616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6359 (or 6347 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1200223616 is about 34644.2436199724. The cubic root of 1200223616 is about 1062.7245727103.

Adding to 1200223616 its reverse (6163220021), we get a palindrome (7363443637).

The spelling of 1200223616 in words is "one billion, two hundred million, two hundred twenty-three thousand, six hundred sixteen".