220394 has 8 divisors (see below), whose sum is σ = 332640. Its totient is φ = 109516.

The previous prime is 220391. The next prime is 220399. The reversal of 220394 is 493022.

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

It is a nialpdrome in base 12.

It is a congruent number.

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, 317 + ... + 735.

It is an arithmetic number, because the mean of its divisors is an integer number (41580).

2²²⁰³⁹⁴ is an apocalyptic number.

220394 is a deficient number, since it is larger than the sum of its proper divisors (112246).

220394 is a wasteful number, since it uses less digits than its factorization.

220394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684.

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

The square root of 220394 is about 469.4613935139. The cubic root of 220394 is about 60.4041238066.

The spelling of 220394 in words is "two hundred twenty thousand, three hundred ninety-four".