1326223140 has 96 divisors (see below), whose sum is σ = 4060796544. Its totient is φ = 320732160.

The previous prime is 1326223139. The next prime is 1326223141. The reversal of 1326223140 is 413226231.

It is an interprime number because it is at equal distance from previous prime (1326223139) and next prime (1326223141).

It is a self number, because there is not a number n which added to its sum of digits gives 1326223140.

It is not an unprimeable number, because it can be changed into a prime (1326223141) 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, 299422 + ... + 303818.

It is an arithmetic number, because the mean of its divisors is an integer number (42299964).

Almost surely, 2^1326223140 is an apocalyptic number.

1326223140 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 1326223140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2030398272).

1326223140 is an abundant number, since it is smaller than the sum of its proper divisors (2734573404).

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

1326223140 is a wasteful number, since it uses less digits than its factorization.

1326223140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4877 (or 4875 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 1326223140 is about 36417.3466908285. The cubic root of 1326223140 is about 1098.6824831901.

Adding to 1326223140 its reverse (413226231), we get a palindrome (1739449371).

The spelling of 1326223140 in words is "one billion, three hundred twenty-six million, two hundred twenty-three thousand, one hundred forty".