1320546726 has 80 divisors (see below), whose sum is σ = 3091888800. Its totient is φ = 420723072.

The previous prime is 1320546709. The next prime is 1320546739. The reversal of 1320546726 is 6276450231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 482530 + ... + 485258.

It is an arithmetic number, because the mean of its divisors is an integer number (38648610).

Almost surely, 2^1320546726 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1320546726, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1545944400).

1320546726 is an abundant number, since it is smaller than the sum of its proper divisors (1771342074).

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

1320546726 is a wasteful number, since it uses less digits than its factorization.

1320546726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2875 (or 2866 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 1320546726 is about 36339.3275391827. The cubic root of 1320546726 is about 1097.1127383874.

Adding to 1320546726 its reverse (6276450231), we get a palindrome (7596996957).

The spelling of 1320546726 in words is "one billion, three hundred twenty million, five hundred forty-six thousand, seven hundred twenty-six".