1320422320 has 80 divisors (see below), whose sum is σ = 3513489408. Its totient is φ = 452079360.

The previous prime is 1320422273. The next prime is 1320422329. The reversal of 1320422320 is 232240231.

1320422320 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (1320422329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 576217 + ... + 578503.

Almost surely, 2^1320422320 is an apocalyptic number.

1320422320 is a gapful number since it is divisible by the number (10) 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 1320422320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1756744704).

1320422320 is an abundant number, since it is smaller than the sum of its proper divisors (2193067088).

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

1320422320 is a wasteful number, since it uses less digits than its factorization.

1320422320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3338 (or 3332 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 1320422320 is about 36337.6157720894. The cubic root of 1320422320 is about 1097.0782850581.

Adding to 1320422320 its reverse (232240231), we get a palindrome (1552662551).

The spelling of 1320422320 in words is "one billion, three hundred twenty million, four hundred twenty-two thousand, three hundred twenty".