3724220 has 12 divisors (see below), whose sum is σ = 7820904. Its totient is φ = 1489680.

The previous prime is 3724213. The next prime is 3724223. The reversal of 3724220 is 224273.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 186211 = 3724220 / (3 + 7 + 2 + 4 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 3724192 and 3724201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3724223) 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 3 ways as a sum of consecutive naturals, for example, 93086 + ... + 93125.

It is an arithmetic number, because the mean of its divisors is an integer number (651742).

Almost surely, 2^3724220 is an apocalyptic number.

It is an amenable number.

3724220 is an abundant number, since it is smaller than the sum of its proper divisors (4096684).

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

3724220 is a wasteful number, since it uses less digits than its factorization.

3724220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186220 (or 186218 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 3724220 is about 1929.8238261562. The cubic root of 3724220 is about 155.0047865327.

Adding to 3724220 its reverse (224273), we get a palindrome (3948493).

The spelling of 3724220 in words is "three million, seven hundred twenty-four thousand, two hundred twenty".