3220188240 has 160 divisors (see below), whose sum is σ = 10349337600. Its totient is φ = 827412480.

The previous prime is 3220188239. The next prime is 3220188241. The reversal of 3220188240 is 428810223.

3220188240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3220188239) and next prime (3220188241).

It is a super-2 number, since 2×3220188240² = 20739224602068595200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 3220188198 and 3220188207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3220188241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2000556 + ... + 2002164.

It is an arithmetic number, because the mean of its divisors is an integer number (64683360).

Almost surely, 2^3220188240 is an apocalyptic number.

3220188240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3220188240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5174668800).

3220188240 is an abundant number, since it is smaller than the sum of its proper divisors (7129149360).

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

3220188240 is a wasteful number, since it uses less digits than its factorization.

3220188240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1925 (or 1919 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 3220188240 is about 56746.7024592619. The cubic root of 3220188240 is about 1476.7050266866.

Adding to 3220188240 its reverse (428810223), we get a palindrome (3648998463).

The spelling of 3220188240 in words is "three billion, two hundred twenty million, one hundred eighty-eight thousand, two hundred forty".