220930 has 8 divisors (see below), whose sum is σ = 397692. Its totient is φ = 88368.

The previous prime is 220919. The next prime is 220931. The reversal of 220930 is 39022.

220930 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 214369 + 6561 = 463^2 + 81^2 .

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

It is not an unprimeable number, because it can be changed into a prime (220931) by changing a digit.

220930 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11037 + ... + 11056.

2²²⁰⁹³⁰ is an apocalyptic number.

220930 is a deficient number, since it is larger than the sum of its proper divisors (176762).

220930 is a wasteful number, since it uses less digits than its factorization.

220930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22100.

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

The square root of 220930 is about 470.0319138101. The cubic root of 220930 is about 60.4530519369.

Adding to 220930 its reverse (39022), we get a palindrome (259952).

The spelling of 220930 in words is "two hundred twenty thousand, nine hundred thirty".