3720222 has 32 divisors (see below), whose sum is σ = 9020160. Its totient is φ = 1127160.

The previous prime is 3720209. The next prime is 3720247. The reversal of 3720222 is 2220273.

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 = 3720195 and 3720204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2538 + ... + 3725.

It is an arithmetic number, because the mean of its divisors is an integer number (281880).

Almost surely, 2^3720222 is an apocalyptic number.

3720222 is an abundant number, since it is smaller than the sum of its proper divisors (5299938).

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

3720222 is a wasteful number, since it uses less digits than its factorization.

3720222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6285 (or 6279 counting only the distinct ones).

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

The square root of 3720222 is about 1928.7877021591. The cubic root of 3720222 is about 154.9493001021.

Adding to 3720222 its reverse (2220273), we get a palindrome (5940495).

The spelling of 3720222 in words is "three million, seven hundred twenty thousand, two hundred twenty-two".