1326271128 has 128 divisors (see below), whose sum is σ = 4098124800. Its totient is φ = 348304896.

The previous prime is 1326271091. The next prime is 1326271139. The reversal of 1326271128 is 8211726231.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 573238 + ... + 575546.

It is an arithmetic number, because the mean of its divisors is an integer number (32016600).

Almost surely, 2^1326271128 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 1326271128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2049062400).

1326271128 is an abundant number, since it is smaller than the sum of its proper divisors (2771853672).

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

1326271128 is a wasteful number, since it uses less digits than its factorization.

1326271128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2601 (or 2597 counting only the distinct ones).

The product of its digits is 8064, while the sum is 33.

The square root of 1326271128 is about 36418.0055467072. The cubic root of 1326271128 is about 1098.6957345899.

Adding to 1326271128 its reverse (8211726231), we get a palindrome (9537997359).

The spelling of 1326271128 in words is "one billion, three hundred twenty-six million, two hundred seventy-one thousand, one hundred twenty-eight".