3318403220 has 54 divisors (see below), whose sum is σ = 7666299018. Its totient is φ = 1205661600.

The previous prime is 3318403199. The next prime is 3318403229. The reversal of 3318403220 is 223048133.

It can be written as a sum of positive squares in only one way, i.e., 2654722576 + 663680644 = 51524^2 + 25762^2 .

It is a super-2 number, since 2×3318403220² = 22023599861012736800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3318403220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3318403229) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2833235 + ... + 2834405.

Almost surely, 2^3318403220 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 3318403220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3833149509).

3318403220 is an abundant number, since it is smaller than the sum of its proper divisors (4347895798).

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

3318403220 is a wasteful number, since it uses less digits than its factorization.

3318403220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2373 (or 1189 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 3318403220 is about 57605.5832363496. The cubic root of 3318403220 is about 1491.5679813757.

The spelling of 3318403220 in words is "three billion, three hundred eighteen million, four hundred three thousand, two hundred twenty".