1729056 has 96 divisors (see below), whose sum is σ = 5419008. Its totient is φ = 472320.

The previous prime is 1729051. The next prime is 1729103. The reversal of 1729056 is 6509271.

1729056 = 221² + 222² + ... + 251².

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×1729056² = 5979269302272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1729051) 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 15 ways as a sum of consecutive naturals, for example, 20791 + ... + 20873.

It is an arithmetic number, because the mean of its divisors is an integer number (56448).

2^1729056 is an apocalyptic number.

1729056 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 1729056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2709504).

1729056 is an abundant number, since it is smaller than the sum of its proper divisors (3689952).

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

1729056 is a wasteful number, since it uses less digits than its factorization.

1729056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 1729056 is about 1314.9357398748. The cubic root of 1729056 is about 120.0244394667.

The spelling of 1729056 in words is "one million, seven hundred twenty-nine thousand, fifty-six".