97218 has 24 divisors (see below), whose sum is σ = 230256. Its totient is φ = 29400.

The previous prime is 97213. The next prime is 97231. The reversal of 97218 is 81279.

It is a junction number, because it is equal to n+sod(n) for n = 97191 and 97200.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 97218.

It is not an unprimeable number, because it can be changed into a prime (97213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48 + ... + 443.

It is an arithmetic number, because the mean of its divisors is an integer number (9594).

2⁹⁷²¹⁸ is an apocalyptic number.

97218 is an abundant number, since it is smaller than the sum of its proper divisors (133038).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115128).

97218 is a wasteful number, since it uses less digits than its factorization.

97218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510 (or 507 counting only the distinct ones).

The product of its digits is 1008, while the sum is 27.

The square root of 97218 is about 311.7980115395. The cubic root of 97218 is about 45.9814039515.

It can be divided in two parts, 972 and 18, that added together give a triangular number (990 = T₄₄).

The spelling of 97218 in words is "ninety-seven thousand, two hundred eighteen".