203056 has 40 divisors (see below), whose sum is σ = 471200. Its totient is φ = 84672.

The previous prime is 203051. The next prime is 203057. The reversal of 203056 is 650302.

203056 is nontrivially palindromic in base 6.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an Ulam number.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (203051) 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 7 ways as a sum of consecutive naturals, for example, 5470 + ... + 5506.

It is an arithmetic number, because the mean of its divisors is an integer number (11780).

2²⁰³⁰⁵⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235600).

203056 is an abundant number, since it is smaller than the sum of its proper divisors (268144).

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

203056 is an equidigital number, since it uses as much as digits as its factorization.

203056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66 (or 46 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 203056 is about 450.6173543041. The cubic root of 203056 is about 58.7767103533.

Adding to 203056 its reverse (650302), we get a palindrome (853358).

The spelling of 203056 in words is "two hundred three thousand, fifty-six".