1200323828 has 24 divisors (see below), whose sum is σ = 2426324544. Its totient is φ = 513507200.

The previous prime is 1200323821. The next prime is 1200323843. The reversal of 1200323828 is 8283230021.

It is a self number, because there is not a number n which added to its sum of digits gives 1200323828.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200323821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 801608 + ... + 803103.

It is an arithmetic number, because the mean of its divisors is an integer number (101096856).

Almost surely, 2^1200323828 is an apocalyptic number.

It is an amenable number.

1200323828 is an abundant number, since it is smaller than the sum of its proper divisors (1226000716).

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

1200323828 is a wasteful number, since it uses less digits than its factorization.

1200323828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1604743 (or 1604741 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 1200323828 is about 34645.6898906632. The cubic root of 1200323828 is about 1062.7541490853.

Adding to 1200323828 its reverse (8283230021), we get a palindrome (9483553849).

The spelling of 1200323828 in words is "one billion, two hundred million, three hundred twenty-three thousand, eight hundred twenty-eight".