14171220 has 192 divisors, whose sum is σ = 52899840. Its totient is φ = 3079296.

The previous prime is 14171191. The next prime is 14171221. The reversal of 14171220 is 2217141.

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 = 14171193 and 14171202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14171221) 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 63 ways as a sum of consecutive naturals, for example, 86859 + ... + 87021.

It is an arithmetic number, because the mean of its divisors is an integer number (275520).

Almost surely, 2^14171220 is an apocalyptic number.

14171220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 14171220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26449920).

14171220 is an abundant number, since it is smaller than the sum of its proper divisors (38728620).

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

14171220 is a wasteful number, since it uses less digits than its factorization.

14171220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211 (or 203 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 14171220 is about 3764.4680899166. The cubic root of 14171220 is about 241.9927826092.

Adding to 14171220 its reverse (2217141), we get a palindrome (16388361).

The spelling of 14171220 in words is "fourteen million, one hundred seventy-one thousand, two hundred twenty".