220393 has 4 divisors (see below), whose sum is σ = 224068. Its totient is φ = 216720.

The previous prime is 220391. The next prime is 220399. The reversal of 220393 is 393022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2304 + 218089 = 48^2 + 467^2 .

It is a cyclic number.

It is not a de Polignac number, because 220393 - 2¹ = 220391 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 220393.

It is not an unprimeable number, because it can be changed into a prime (220391) 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 3 ways as a sum of consecutive naturals, for example, 1746 + ... + 1867.

It is an arithmetic number, because the mean of its divisors is an integer number (56017).

2²²⁰³⁹³ is an apocalyptic number.

It is an amenable number.

220393 is a deficient number, since it is larger than the sum of its proper divisors (3675).

220393 is an equidigital number, since it uses as much as digits as its factorization.

220393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3674.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 220393 is about 469.4603284624. The cubic root of 220393 is about 60.4040324486.

The spelling of 220393 in words is "two hundred twenty thousand, three hundred ninety-three".