220473 has 24 divisors (see below), whose sum is σ = 370656. Its totient is φ = 124800.

The previous prime is 220471. The next prime is 220511. The reversal of 220473 is 374022.

It is a happy number.

It is not a de Polignac number, because 220473 - 2¹ = 220471 is a prime.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

220473 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (220471) 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 23 ways as a sum of consecutive naturals, for example, 1618 + ... + 1748.

It is an arithmetic number, because the mean of its divisors is an integer number (15444).

2²²⁰⁴⁷³ is an apocalyptic number.

It is an amenable number.

220473 is a deficient number, since it is larger than the sum of its proper divisors (150183).

220473 is a wasteful number, since it uses less digits than its factorization.

220473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165 (or 162 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 220473 is about 469.5455249494. The cubic root of 220473 is about 60.4113402095.

Adding to 220473 its reverse (374022), we get a palindrome (594495).

The spelling of 220473 in words is "two hundred twenty thousand, four hundred seventy-three", and thus it is an iban number.