4218856 has 32 divisors (see below), whose sum is σ = 8519040. Its totient is φ = 1951488.

The previous prime is 4218847. The next prime is 4218857. The reversal of 4218856 is 6588124.

4218856 = T₉₆ + T₉₇ + ... + T₂₉₆.

4218856 is nontrivially palindromic in base 7.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4218857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8881 + ... + 9343.

It is an arithmetic number, because the mean of its divisors is an integer number (266220).

Almost surely, 2^4218856 is an apocalyptic number.

It is an amenable number.

4218856 is an abundant number, since it is smaller than the sum of its proper divisors (4300184).

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

4218856 is a wasteful number, since it uses less digits than its factorization.

4218856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553 (or 549 counting only the distinct ones).

The product of its digits is 15360, while the sum is 34.

The square root of 4218856 is about 2053.9853943006. The cubic root of 4218856 is about 161.5839550452.

The spelling of 4218856 in words is "four million, two hundred eighteen thousand, eight hundred fifty-six".