8413220 has 24 divisors (see below), whose sum is σ = 18003384. Its totient is φ = 3301376.

The previous prime is 8413211. The next prime is 8413243. The reversal of 8413220 is 223148.

8413220 = T₁₆₉ + T₁₇₀ + ... + T₃₈₀.

8413220 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 4194304 + 4218916 = 2048^2 + 2054^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a d-powerful number, because it can be written as 8 + 4⁷ + 1 + 3³ + 2¹³ + 2²³ + 0 .

It is a junction number, because it is equal to n+sod(n) for n = 8413192 and 8413201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2909 + ... + 5028.

It is an arithmetic number, because the mean of its divisors is an integer number (750141).

Almost surely, 2^8413220 is an apocalyptic number.

It is an amenable number.

8413220 is an abundant number, since it is smaller than the sum of its proper divisors (9590164).

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

8413220 is a wasteful number, since it uses less digits than its factorization.

8413220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7999 (or 7997 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 8413220 is about 2900.5551192832. Note that the first 3 decimals coincide. The cubic root of 8413220 is about 203.3858564187.

Adding to 8413220 its reverse (223148), we get a palindrome (8636368).

The spelling of 8413220 in words is "eight million, four hundred thirteen thousand, two hundred twenty".