220493 has 8 divisors (see below), whose sum is σ = 271488. Its totient is φ = 174384.

The previous prime is 220471. The next prime is 220511. The reversal of 220493 is 394022.

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

It is not a de Polignac number, because 220493 - 2¹² = 216397 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220403) 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, 1121 + ... + 1302.

It is an arithmetic number, because the mean of its divisors is an integer number (33936).

2²²⁰⁴⁹³ is an apocalyptic number.

It is an amenable number.

220493 is a deficient number, since it is larger than the sum of its proper divisors (50995).

220493 is a wasteful number, since it uses less digits than its factorization.

220493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2443.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 220493 is about 469.5668216559. The cubic root of 220493 is about 60.4131668735.

The spelling of 220493 in words is "two hundred twenty thousand, four hundred ninety-three".