1329056 has 24 divisors (see below), whose sum is σ = 2683044. Its totient is φ = 647680.

The previous prime is 1329011. The next prime is 1329061. The reversal of 1329056 is 6509231.

It can be written as a sum of positive squares in 2 ways, for example, as 839056 + 490000 = 916^2 + 700^2 .

It is a super-2 number, since 2×1329056² = 3532779702272, which contains 22 as substring.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 806 + ... + 1818.

2^1329056 is an apocalyptic number.

1329056 is a gapful number since it is divisible by the number (16) 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 1329056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1341522).

1329056 is an abundant number, since it is smaller than the sum of its proper divisors (1353988).

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

1329056 is a wasteful number, since it uses less digits than its factorization.

1329056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064 (or 1056 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 1329056 is about 1152.8469109123. The cubic root of 1329056 is about 109.9464201871.

The spelling of 1329056 in words is "one million, three hundred twenty-nine thousand, fifty-six".