3722220 has 96 divisors (see below), whose sum is σ = 11874240. Its totient is φ = 967680.

The previous prime is 3722219. The next prime is 3722221. The reversal of 3722220 is 222273.

3722220 is digitally balanced in base 5, 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 (3722219) and next prime (3722221).

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

It is a junction number, because it is equal to n+sod(n) for n = 3722193 and 3722202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3722221) 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, 32884 + ... + 32996.

It is an arithmetic number, because the mean of its divisors is an integer number (123690).

Almost surely, 2^3722220 is an apocalyptic number.

3722220 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 3722220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5937120).

3722220 is an abundant number, since it is smaller than the sum of its proper divisors (8152020).

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

3722220 is a wasteful number, since it uses less digits than its factorization.

3722220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192 (or 184 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 3722220 is about 1929.3055745527. The cubic root of 3722220 is about 154.9770344053.

Adding to 3722220 its reverse (222273), we get a palindrome (3944493).

The spelling of 3722220 in words is "three million, seven hundred twenty-two thousand, two hundred twenty".