4171220 has 24 divisors (see below), whose sum is σ = 8882664. Its totient is φ = 1645056.

The previous prime is 4171213. The next prime is 4171229. The reversal of 4171220 is 221714.

It can be written as a sum of positive squares in 4 ways, for example, as 770884 + 3400336 = 878^2 + 1844^2 .

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4171229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32 + ... + 2888.

It is an arithmetic number, because the mean of its divisors is an integer number (370111).

Almost surely, 2^4171220 is an apocalyptic number.

It is an amenable number.

4171220 is an abundant number, since it is smaller than the sum of its proper divisors (4711444).

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

4171220 is a wasteful number, since it uses less digits than its factorization.

4171220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2939 (or 2937 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 4171220 is about 2042.3564821059. The cubic root of 4171220 is about 160.9734920287.

Adding to 4171220 its reverse (221714), we get a palindrome (4392934).

The spelling of 4171220 in words is "four million, one hundred seventy-one thousand, two hundred twenty".