1447331328 has 120 divisors (see below), whose sum is σ = 4332175848. Its totient is φ = 482402304.

The previous prime is 1447331299. The next prime is 1447331357. The reversal of 1447331328 is 8231337441.

It is an interprime number because it is at equal distance from previous prime (1447331299) and next prime (1447331357).

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 = 1447331292 and 1447331301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 118600 + ... + 130232.

Almost surely, 2^1447331328 is an apocalyptic number.

1447331328 is a gapful number since it is divisible by the number (18) 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 1447331328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2166087924).

1447331328 is an abundant number, since it is smaller than the sum of its proper divisors (2884844520).

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

1447331328 is an frugal number, since it uses more digits than its factorization.

1447331328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11666 (or 11638 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 1447331328 is about 38043.8080112914. The cubic root of 1447331328 is about 1131.1563926167.

Adding to 1447331328 its reverse (8231337441), we get a palindrome (9678668769).

The spelling of 1447331328 in words is "one billion, four hundred forty-seven million, three hundred thirty-one thousand, three hundred twenty-eight".