3218130 has 80 divisors (see below), whose sum is σ = 9016920. Its totient is φ = 822528.

The previous prime is 3218123. The next prime is 3218143. The reversal of 3218130 is 318123.

It can be written as a sum of positive squares in 4 ways, for example, as 2712609 + 505521 = 1647^2 + 711^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 23422 + ... + 23558.

Almost surely, 2^3218130 is an apocalyptic number.

3218130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3218130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4508460).

3218130 is an abundant number, since it is smaller than the sum of its proper divisors (5798790).

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

3218130 is a wasteful number, since it uses less digits than its factorization.

3218130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185 (or 176 counting only the distinct ones).

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

The square root of 3218130 is about 1793.9147136918. The cubic root of 3218130 is about 147.6390338960.

The spelling of 3218130 in words is "three million, two hundred eighteen thousand, one hundred thirty".