297220 has 48 divisors (see below), whose sum is σ = 782208. Its totient is φ = 92160.

The previous prime is 297191. The next prime is 297233. The reversal of 297220 is 22792.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 297191 and 297200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1444 + ... + 1636.

It is an arithmetic number, because the mean of its divisors is an integer number (16296).

2²⁹⁷²²⁰ is an apocalyptic number.

297220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 297220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (391104).

297220 is an abundant number, since it is smaller than the sum of its proper divisors (484988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

297220 is a wasteful number, since it uses less digits than its factorization.

297220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220 (or 218 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 297220 is about 545.1788697299. The cubic root of 297220 is about 66.7358725777.

It can be divided in two parts, 2972 and 20, that added together give a palindrome (2992).

The spelling of 297220 in words is "two hundred ninety-seven thousand, two hundred twenty".