8127220 has 12 divisors (see below), whose sum is σ = 17067204. Its totient is φ = 3250880.

The previous prime is 8127209. The next prime is 8127227. The reversal of 8127220 is 227218.

It can be written as a sum of positive squares in 2 ways, for example, as 5895184 + 2232036 = 2428^2 + 1494^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8127191 and 8127200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8127227) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 203161 + ... + 203200.

It is an arithmetic number, because the mean of its divisors is an integer number (1422267).

Almost surely, 2^8127220 is an apocalyptic number.

It is an amenable number.

8127220 is an abundant number, since it is smaller than the sum of its proper divisors (8939984).

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

8127220 is a wasteful number, since it uses less digits than its factorization.

8127220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406370 (or 406368 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 8127220 is about 2850.8279499121. The cubic root of 8127220 is about 201.0545960286.

The spelling of 8127220 in words is "eight million, one hundred twenty-seven thousand, two hundred twenty".