1326744144 has 320 divisors, whose sum is σ = 4428288000. Its totient is φ = 376358400.

The previous prime is 1326744143. The next prime is 1326744149. The reversal of 1326744144 is 4414476231.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1326744099 and 1326744108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1326744143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6666957 + ... + 6667155.

It is an arithmetic number, because the mean of its divisors is an integer number (13838400).

Almost surely, 2^1326744144 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 1326744144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2214144000).

1326744144 is an abundant number, since it is smaller than the sum of its proper divisors (3101543856).

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

1326744144 is a wasteful number, since it uses less digits than its factorization.

1326744144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311 (or 299 counting only the distinct ones).

The product of its digits is 64512, while the sum is 36.

The square root of 1326744144 is about 36424.4992278549. The cubic root of 1326744144 is about 1098.8263360632.

The spelling of 1326744144 in words is "one billion, three hundred twenty-six million, seven hundred forty-four thousand, one hundred forty-four".