1329456 has 20 divisors (see below), whose sum is σ = 3434552. Its totient is φ = 443136.

The previous prime is 1329439. The next prime is 1329457. The reversal of 1329456 is 6549231.

It is a d-powerful number, because it can be written as 1 + 3⁶ + 2⁷ + 9² + 4¹⁰ + 5 + 6⁷ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1329457) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 13801 + ... + 13896.

2^1329456 is an apocalyptic number.

1329456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1329456 is an abundant number, since it is smaller than the sum of its proper divisors (2105096).

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

1329456 is a wasteful number, since it uses less digits than its factorization.

1329456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27708 (or 27702 counting only the distinct ones).

The product of its digits is 6480, while the sum is 30.

The square root of 1329456 is about 1153.0203814330. The cubic root of 1329456 is about 109.9574491071.

The spelling of 1329456 in words is "one million, three hundred twenty-nine thousand, four hundred fifty-six".