220046 has 4 divisors (see below), whose sum is σ = 330072. Its totient is φ = 110022.

The previous prime is 220021. The next prime is 220057. The reversal of 220046 is 640022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 640022 = 2 ⋅320011.

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 220046.

It is a congruent number.

It is an unprimeable number.

220046 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 as a sum of consecutive naturals, namely, 55010 + ... + 55013.

It is an arithmetic number, because the mean of its divisors is an integer number (82518).

2²²⁰⁰⁴⁶ is an apocalyptic number.

220046 is a deficient number, since it is larger than the sum of its proper divisors (110026).

220046 is a wasteful number, since it uses less digits than its factorization.

220046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110025.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 220046 is about 469.0906095841. The cubic root of 220046 is about 60.3723145489.

Adding to 220046 its reverse (640022), we get a palindrome (860068).

The spelling of 220046 in words is "two hundred twenty thousand, forty-six".