220208481 has 12 divisors (see below), whose sum is σ = 324081108. Its totient is φ = 144035424.

The previous prime is 220208479. The next prime is 220208491. The reversal of 220208481 is 184802022.

It can be written as a sum of positive squares in 2 ways, for example, as 168584256 + 51624225 = 12984^2 + 7185^2 .

It is not a de Polignac number, because 220208481 - 2¹ = 220208479 is a prime.

It is a super-2 number, since 2×220208481² = 96983550208654722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (220208491) 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 in 11 ways as a sum of consecutive naturals, for example, 230350 + ... + 231303.

It is an arithmetic number, because the mean of its divisors is an integer number (27006759).

Almost surely, 2^220208481 is an apocalyptic number.

It is an amenable number.

220208481 is a deficient number, since it is larger than the sum of its proper divisors (103872627).

220208481 is a wasteful number, since it uses less digits than its factorization.

220208481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461712 (or 461709 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 220208481 is about 14839.4232030763. The cubic root of 220208481 is about 603.8717044364.

The spelling of 220208481 in words is "two hundred twenty million, two hundred eight thousand, four hundred eighty-one".