3223620 has 36 divisors (see below), whose sum is σ = 9778860. Its totient is φ = 859584.

The previous prime is 3223603. The next prime is 3223621. The reversal of 3223620 is 263223.

It can be written as a sum of positive squares in 2 ways, for example, as 1285956 + 1937664 = 1134^2 + 1392^2 .

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 = 3223593 and 3223602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3223621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8775 + ... + 9134.

It is an arithmetic number, because the mean of its divisors is an integer number (271635).

Almost surely, 2^3223620 is an apocalyptic number.

3223620 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3223620 is an abundant number, since it is smaller than the sum of its proper divisors (6555240).

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

3223620 is a wasteful number, since it uses less digits than its factorization.

3223620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17924 (or 17919 counting only the distinct ones).

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

The square root of 3223620 is about 1795.4442347230. Note that the first 3 decimals coincide. The cubic root of 3223620 is about 147.7229416123.

Adding to 3223620 its reverse (263223), we get a palindrome (3486843).

The spelling of 3223620 in words is "three million, two hundred twenty-three thousand, six hundred twenty".