1326511456 has 48 divisors (see below), whose sum is σ = 2693343744. Its totient is φ = 642766464.

The previous prime is 1326511427. The next prime is 1326511469. The reversal of 1326511456 is 6541156231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150631 + ... + 159193.

It is an arithmetic number, because the mean of its divisors is an integer number (56111328).

Almost surely, 2^1326511456 is an apocalyptic number.

1326511456 is a gapful number since it is divisible by the number (16) 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 1326511456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1346671872).

1326511456 is an abundant number, since it is smaller than the sum of its proper divisors (1366832288).

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

1326511456 is a wasteful number, since it uses less digits than its factorization.

1326511456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8723 (or 8715 counting only the distinct ones).

The product of its digits is 21600, while the sum is 34.

The square root of 1326511456 is about 36421.3049738748. The cubic root of 1326511456 is about 1098.7620939226.

Adding to 1326511456 its reverse (6541156231), we get a palindrome (7867667687).

The spelling of 1326511456 in words is "one billion, three hundred twenty-six million, five hundred eleven thousand, four hundred fifty-six".