14215220 has 24 divisors (see below), whose sum is σ = 30882600. Its totient is φ = 5489792.

The previous prime is 14215199. The next prime is 14215261. The reversal of 14215220 is 2251241.

It can be written as a sum of positive squares in 4 ways, for example, as 4343056 + 9872164 = 2084^2 + 3142^2 .

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 11675 + ... + 12834.

It is an arithmetic number, because the mean of its divisors is an integer number (1286775).

Almost surely, 2^14215220 is an apocalyptic number.

14215220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14215220 is an abundant number, since it is smaller than the sum of its proper divisors (16667380).

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

14215220 is a wasteful number, since it uses less digits than its factorization.

14215220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24547 (or 24545 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 14215220 is about 3770.3076797524. The cubic root of 14215220 is about 242.2429770518.

Adding to 14215220 its reverse (2251241), we get a palindrome (16466461).

The spelling of 14215220 in words is "fourteen million, two hundred fifteen thousand, two hundred twenty".