1329984 has 42 divisors (see below), whose sum is σ = 3813810. Its totient is φ = 443136.

The previous prime is 1329971. The next prime is 1330001. The reversal of 1329984 is 4899231.

It can be written as a sum of positive squares in only one way, i.e., 1272384 + 57600 = 1128^2 + 240^2 .

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 579 + ... + 1730.

It is an arithmetic number, because the mean of its divisors is an integer number (90805).

2^1329984 is an apocalyptic number.

It is an amenable number.

1329984 is an abundant number, since it is smaller than the sum of its proper divisors (2483826).

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

1329984 is a wasteful number, since it uses less digits than its factorization.

1329984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2327 (or 2314 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 1329984 is about 1153.2493225665. The cubic root of 1329984 is about 109.9720038946.

The spelling of 1329984 in words is "one million, three hundred twenty-nine thousand, nine hundred eighty-four".