4218368 has 80 divisors (see below), whose sum is σ = 10606464. Its totient is φ = 1628160.

The previous prime is 4218359. The next prime is 4218371. The reversal of 4218368 is 8638124.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a d-powerful number, because it can be written as 4 + 2²² + 1 + 8² + 3⁹ + 6³ + 8⁴ .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39371 + ... + 39477.

Almost surely, 2^4218368 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 4218368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5303232).

4218368 is an abundant number, since it is smaller than the sum of its proper divisors (6388096).

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

4218368 is a wasteful number, since it uses less digits than its factorization.

4218368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 127 counting only the distinct ones).

The product of its digits is 9216, while the sum is 32.

The square root of 4218368 is about 2053.8665974206. The cubic root of 4218368 is about 161.5777246034.

The spelling of 4218368 in words is "four million, two hundred eighteen thousand, three hundred sixty-eight".