1326335240 has 128 divisors (see below), whose sum is σ = 3273268320. Its totient is φ = 481689600.

The previous prime is 1326335237. The next prime is 1326335243. The reversal of 1326335240 is 425336231.

It is an interprime number because it is at equal distance from previous prime (1326335237) and next prime (1326335243).

It can be written as a sum of positive squares in 16 ways, for example, as 301439044 + 1024896196 = 17362^2 + 32014^2 .

It is not an unprimeable number, because it can be changed into a prime (1326335243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3150230 + ... + 3150650.

Almost surely, 2^1326335240 is an apocalyptic number.

1326335240 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 1326335240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1636634160).

1326335240 is an abundant number, since it is smaller than the sum of its proper divisors (1946933080).

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

1326335240 is a wasteful number, since it uses less digits than its factorization.

1326335240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603 (or 599 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 29.

The square root of 1326335240 is about 36418.8857600010. The cubic root of 1326335240 is about 1098.7134379701.

Subtracting from 1326335240 its reverse (425336231), we obtain a palindrome (900999009).

The spelling of 1326335240 in words is "one billion, three hundred twenty-six million, three hundred thirty-five thousand, two hundred forty".