218283604 has 96 divisors (see below), whose sum is σ = 515579904. Its totient is φ = 78251520.

The previous prime is 218283601. The next prime is 218283613. The reversal of 218283604 is 406382812.

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

It is a self number, because there is not a number n which added to its sum of digits gives 218283604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218283601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 245649 + ... + 246535.

It is an arithmetic number, because the mean of its divisors is an integer number (5370624).

Almost surely, 2^218283604 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 218283604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257789952).

218283604 is an abundant number, since it is smaller than the sum of its proper divisors (297296300).

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

218283604 is a wasteful number, since it uses less digits than its factorization.

218283604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973 (or 971 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 218283604 is about 14774.4239820035. The cubic root of 218283604 is about 602.1070401231.

The spelling of 218283604 in words is "two hundred eighteen million, two hundred eighty-three thousand, six hundred four".