220281 has 8 divisors (see below), whose sum is σ = 297024. Its totient is φ = 145200.

The previous prime is 220279. The next prime is 220291. The reversal of 220281 is 182022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 220281 - 2¹ = 220279 is a prime.

It is a super-2 number, since 2×220281² = 97047437922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 220281.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 220281.

It is not an unprimeable number, because it can be changed into a prime (220291) 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 7 ways as a sum of consecutive naturals, for example, 61 + ... + 666.

It is an arithmetic number, because the mean of its divisors is an integer number (37128).

2²²⁰²⁸¹ is an apocalyptic number.

It is an amenable number.

220281 is a deficient number, since it is larger than the sum of its proper divisors (76743).

220281 is a wasteful number, since it uses less digits than its factorization.

220281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 220281 is about 469.3410273991. The cubic root of 220281 is about 60.3937986119.

The spelling of 220281 in words is "two hundred twenty thousand, two hundred eighty-one".