1200004432 has 180 divisors, whose sum is σ = 2884104468. Its totient is φ = 481536000.

The previous prime is 1200004417. The next prime is 1200004433. The reversal of 1200004432 is 2344000021.

It can be written as a sum of positive squares in 2 ways, for example, as 1063020816 + 136983616 = 32604^2 + 11704^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200004433) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 11881182 + ... + 11881282.

Almost surely, 2^1200004432 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 1200004432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1442052234).

1200004432 is an abundant number, since it is smaller than the sum of its proper divisors (1684100036).

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

1200004432 is a wasteful number, since it uses less digits than its factorization.

1200004432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1200004432 is about 34641.0801217283. The cubic root of 1200004432 is about 1062.6598774318.

Adding to 1200004432 its reverse (2344000021), we get a palindrome (3544004453).

The spelling of 1200004432 in words is "one billion, two hundred million, four thousand, four hundred thirty-two".