220243256 has 8 divisors (see below), whose sum is σ = 412956120. Its totient is φ = 110121624.

The previous prime is 220243241. The next prime is 220243259. The reversal of 220243256 is 652342022.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220243259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13765196 + ... + 13765211.

It is an arithmetic number, because the mean of its divisors is an integer number (51619515).

Almost surely, 2^220243256 is an apocalyptic number.

It is an amenable number.

220243256 is a deficient number, since it is larger than the sum of its proper divisors (192712864).

220243256 is a wasteful number, since it uses less digits than its factorization.

220243256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27530413 (or 27530409 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 220243256 is about 14840.5948667835. The cubic root of 220243256 is about 603.9034902743.

Adding to 220243256 its reverse (652342022), we get a palindrome (872585278).

The spelling of 220243256 in words is "two hundred twenty million, two hundred forty-three thousand, two hundred fifty-six".