862218 has 32 divisors (see below), whose sum is σ = 2190720. Its totient is φ = 246240.

The previous prime is 862207. The next prime is 862219. The reversal of 862218 is 812268.

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

It is a junction number, because it is equal to n+sod(n) for n = 862191 and 862200.

It is not an unprimeable number, because it can be changed into a prime (862219) by changing a digit.

862218 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 (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 763 + ... + 1518.

It is an arithmetic number, because the mean of its divisors is an integer number (68460).

2⁸⁶²²¹⁸ is an apocalyptic number.

862218 is an abundant number, since it is smaller than the sum of its proper divisors (1328502).

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

862218 is a wasteful number, since it uses less digits than its factorization.

862218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2299 (or 2293 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 862218 is about 928.5569449420. The cubic root of 862218 is about 95.1785377553.

It can be divided in two parts, 86 and 2218, that added together give a square (2304 = 48²).

The spelling of 862218 in words is "eight hundred sixty-two thousand, two hundred eighteen".