220390 has 8 divisors (see below), whose sum is σ = 396720. Its totient is φ = 88152.

The previous prime is 220373. The next prime is 220391. The reversal of 220390 is 93022.

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

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, 11010 + ... + 11029.

It is an arithmetic number, because the mean of its divisors is an integer number (49590).

2²²⁰³⁹⁰ is an apocalyptic number.

220390 is a deficient number, since it is larger than the sum of its proper divisors (176330).

220390 is a wasteful number, since it uses less digits than its factorization.

220390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22046.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 220390 is about 469.4571332933. The cubic root of 220390 is about 60.4037583732.

The spelling of 220390 in words is "two hundred twenty thousand, three hundred ninety".