1200328136 has 64 divisors (see below), whose sum is σ = 2644911360. Its totient is φ = 500265600.

The previous prime is 1200328121. The next prime is 1200328193. The reversal of 1200328136 is 6318230021.

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, 3859421 + ... + 3859731.

It is an arithmetic number, because the mean of its divisors is an integer number (41326740).

Almost surely, 2^1200328136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1200328136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1322455680).

1200328136 is an abundant number, since it is smaller than the sum of its proper divisors (1444583224).

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

1200328136 is an frugal number, since it uses more digits than its factorization.

1200328136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447 (or 361 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1200328136 is about 34645.7520628431. The cubic root of 1200328136 is about 1062.7554205031.

Adding to 1200328136 its reverse (6318230021), we get a palindrome (7518558157).

The spelling of 1200328136 in words is "one billion, two hundred million, three hundred twenty-eight thousand, one hundred thirty-six".