6218220 has 48 divisors (see below), whose sum is σ = 17887968. Its totient is φ = 1612800.

The previous prime is 6218207. The next prime is 6218221. The reversal of 6218220 is 228126.

It is not an unprimeable number, because it can be changed into a prime (6218221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 820 + ... + 3620.

It is an arithmetic number, because the mean of its divisors is an integer number (372666).

Almost surely, 2^6218220 is an apocalyptic number.

6218220 is a gapful number since it is divisible by the number (60) 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 6218220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8943984).

6218220 is an abundant number, since it is smaller than the sum of its proper divisors (11669748).

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

6218220 is a wasteful number, since it uses less digits than its factorization.

6218220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2850 (or 2848 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 6218220 is about 2493.6358996453. The cubic root of 6218220 is about 183.8888348686. Note that the first 4 decimals are identical.

The spelling of 6218220 in words is "six million, two hundred eighteen thousand, two hundred twenty".