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14220 = 2232579
BaseRepresentation
bin11011110001100
3201111200
43132030
5423340
6145500
756313
oct33614
921450
1014220
11a758
128290
13661b
14527a
154330
hex378c

14220 has 36 divisors (see below), whose sum is σ = 43680. Its totient is φ = 3744.

The previous prime is 14207. The next prime is 14221. The reversal of 14220 is 2241.

Adding to 14220 its reverse (2241), we get a palindrome (16461).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a plaindrome in base 16.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 141 + ... + 219.

214220 is an apocalyptic number.

14220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

14220 is the 60-th decagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 14220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21840).

14220 is an abundant number, since it is smaller than the sum of its proper divisors (29460).

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

14220 is a wasteful number, since it uses less digits than its factorization.

14220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94 (or 89 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 14220 is about 119.2476414861. The cubic root of 14220 is about 24.2270126161.

The spelling of 14220 in words is "fourteen thousand, two hundred twenty", and thus it is an iban number.

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 60 79 90 158 180 237 316 395 474 711 790 948 1185 1422 1580 2370 2844 3555 4740 7110 14220