418224 has 20 divisors (see below), whose sum is σ = 1080536. Its totient is φ = 139392.

The previous prime is 418219. The next prime is 418259. The reversal of 418224 is 422814.

It is a super-2 number, since 2×418224² = 349822628352, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 418224.

It is an unprimeable number.

418224 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 3 ways as a sum of consecutive naturals, for example, 4309 + ... + 4404.

2⁴¹⁸²²⁴ is an apocalyptic number.

It is an amenable number.

418224 is an abundant number, since it is smaller than the sum of its proper divisors (662312).

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

418224 is a wasteful number, since it uses less digits than its factorization.

418224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8724 (or 8718 counting only the distinct ones).

The product of its digits is 512, while the sum is 21.

The square root of 418224 is about 646.7024045108. The cubic root of 418224 is about 74.7830172966.

The spelling of 418224 in words is "four hundred eighteen thousand, two hundred twenty-four".