4781218 has 16 divisors (see below), whose sum is σ = 7761600. Its totient is φ = 2195856.

The previous prime is 4781197. The next prime is 4781237. The reversal of 4781218 is 8121874.

It is an alternating number because its digits alternate between even and odd.

It is a nialpdrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 4781218.

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, 7683 + ... + 8281.

It is an arithmetic number, because the mean of its divisors is an integer number (485100).

Almost surely, 2^4781218 is an apocalyptic number.

4781218 is a deficient number, since it is larger than the sum of its proper divisors (2980382).

4781218 is a wasteful number, since it uses less digits than its factorization.

4781218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921.

The product of its digits is 3584, while the sum is 31.

The square root of 4781218 is about 2186.5996432818. The cubic root of 4781218 is about 168.4662266809.

The spelling of 4781218 in words is "four million, seven hundred eighty-one thousand, two hundred eighteen".