3623220 has 36 divisors (see below), whose sum is σ = 10990980. Its totient is φ = 966144.

The previous prime is 3623203. The next prime is 3623237. The reversal of 3623220 is 223263.

3623220 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 (3623203) and next prime (3623237).

It can be written as a sum of positive squares in 2 ways, for example, as 2377764 + 1245456 = 1542^2 + 1116^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 = 3623193 and 3623202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9885 + ... + 10244.

It is an arithmetic number, because the mean of its divisors is an integer number (305305).

Almost surely, 2^3623220 is an apocalyptic number.

3623220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3623220 is an abundant number, since it is smaller than the sum of its proper divisors (7367760).

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

3623220 is a wasteful number, since it uses less digits than its factorization.

3623220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20144 (or 20139 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 3623220 is about 1903.4757681673. The cubic root of 3623220 is about 153.5906936093.

Adding to 3623220 its reverse (223263), we get a palindrome (3846483).

The spelling of 3623220 in words is "three million, six hundred twenty-three thousand, two hundred twenty".