1328412744 has 128 divisors (see below), whose sum is σ = 3940992000. Its totient is φ = 413683200.

The previous prime is 1328412727. The next prime is 1328412779. The reversal of 1328412744 is 4472148231.

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 = 1328412699 and 1328412708.

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, 190764 + ... + 197604.

It is an arithmetic number, because the mean of its divisors is an integer number (30789000).

Almost surely, 2^1328412744 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 1328412744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1970496000).

1328412744 is an abundant number, since it is smaller than the sum of its proper divisors (2612579256).

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

1328412744 is a wasteful number, since it uses less digits than its factorization.

1328412744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6916 (or 6906 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 1328412744 is about 36447.3969440892. The cubic root of 1328412744 is about 1099.2867949808.

The spelling of 1328412744 in words is "one billion, three hundred twenty-eight million, four hundred twelve thousand, seven hundred forty-four".