297216 has 72 divisors (see below), whose sum is σ = 899360. Its totient is φ = 96768.

The previous prime is 297191. The next prime is 297233. The reversal of 297216 is 612792.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 297216.

It is an unprimeable number.

297216 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 7 ways as a sum of consecutive naturals, for example, 6891 + ... + 6933.

2²⁹⁷²¹⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 297216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (449680).

297216 is an abundant number, since it is smaller than the sum of its proper divisors (602144).

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

297216 is an equidigital number, since it uses as much as digits as its factorization.

297216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68 (or 48 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 297216 is about 545.1752011968. The cubic root of 297216 is about 66.7355731983.

The spelling of 297216 in words is "two hundred ninety-seven thousand, two hundred sixteen".