14381220 has 96 divisors (see below), whose sum is σ = 46626048. Its totient is φ = 3244032.

The previous prime is 14381207. The next prime is 14381249. The reversal of 14381220 is 2218341.

14381220 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40564 + ... + 40916.

It is an arithmetic number, because the mean of its divisors is an integer number (485688).

Almost surely, 2^14381220 is an apocalyptic number.

14381220 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 14381220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23313024).

14381220 is an abundant number, since it is smaller than the sum of its proper divisors (32244828).

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

14381220 is a wasteful number, since it uses less digits than its factorization.

14381220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469 (or 467 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 14381220 is about 3792.2579026221. The cubic root of 14381220 is about 243.1822710775.

Adding to 14381220 its reverse (2218341), we get a palindrome (16599561).

The spelling of 14381220 in words is "fourteen million, three hundred eighty-one thousand, two hundred twenty".