10303218 has 48 divisors (see below), whose sum is σ = 23901696. Its totient is φ = 3199680.

The previous prime is 10303217. The next prime is 10303247. The reversal of 10303218 is 81230301.

It is a Harshad number since it is a multiple of its sum of digits (18).

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

It is a self number, because there is not a number n which added to its sum of digits gives 10303218.

It is not an unprimeable number, because it can be changed into a prime (10303211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16671 + ... + 17277.

It is an arithmetic number, because the mean of its divisors is an integer number (497952).

Almost surely, 2^10303218 is an apocalyptic number.

10303218 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 10303218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11950848).

10303218 is an abundant number, since it is smaller than the sum of its proper divisors (13598478).

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

10303218 is a wasteful number, since it uses less digits than its factorization.

10303218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679 (or 676 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 10303218 is about 3209.8626138824. The cubic root of 10303218 is about 217.5993679921.

Adding to 10303218 its reverse (81230301), we get a palindrome (91533519).

The spelling of 10303218 in words is "ten million, three hundred three thousand, two hundred eighteen".