1320204432 has 60 divisors (see below), whose sum is σ = 3484916336. Its totient is φ = 430670400.

The previous prime is 1320204421. The next prime is 1320204449. The reversal of 1320204432 is 2344020231.

It is a junction number, because it is equal to n+sod(n) for n = 1320204399 and 1320204408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 99807 + ... + 112257.

Almost surely, 2^1320204432 is an apocalyptic number.

1320204432 is a gapful number since it is divisible by the number (12) 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 1320204432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1742458168).

1320204432 is an abundant number, since it is smaller than the sum of its proper divisors (2164711904).

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

1320204432 is a wasteful number, since it uses less digits than its factorization.

1320204432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12556 (or 12503 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 1320204432 is about 36334.6175430539. The cubic root of 1320204432 is about 1097.0179373599.

Adding to 1320204432 its reverse (2344020231), we get a palindrome (3664224663).

The spelling of 1320204432 in words is "one billion, three hundred twenty million, two hundred four thousand, four hundred thirty-two".