220494 has 8 divisors (see below), whose sum is σ = 441000. Its totient is φ = 73496.

The previous prime is 220471. The next prime is 220511. The reversal of 220494 is 494022.

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

220494 is an admirable number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 220494.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 220494.

It is an unprimeable number.

220494 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 18369 + ... + 18380.

It is an arithmetic number, because the mean of its divisors is an integer number (55125).

2²²⁰⁴⁹⁴ is an apocalyptic number.

220494 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220494 is a wasteful number, since it uses less digits than its factorization.

220494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36754.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 220494 is about 469.5678864658. The cubic root of 220494 is about 60.4132582038.

The spelling of 220494 in words is "two hundred twenty thousand, four hundred ninety-four".