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14073221 = 16978293
BaseRepresentation
bin110101101011…
…110110000101
3222110222211102
4311223312011
512100320341
61221345445
7230422541
oct65536605
928428742
1014073221
117a42468
124868285
132bb9866
141c24a21
15137ec9b
hexd6bd85

14073221 has 4 divisors (see below), whose sum is σ = 14083212. Its totient is φ = 14063232.

The previous prime is 14073203. The next prime is 14073223. The reversal of 14073221 is 12237041.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 12237041 = 13818861.

It can be written as a sum of positive squares in 2 ways, for example, as 9060100 + 5013121 = 3010^2 + 2239^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-14073221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 14073193 and 14073202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14073223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2450 + ... + 5843.

It is an arithmetic number, because the mean of its divisors is an integer number (3520803).

Almost surely, 214073221 is an apocalyptic number.

It is an amenable number.

14073221 is a deficient number, since it is larger than the sum of its proper divisors (9991).

14073221 is an equidigital number, since it uses as much as digits as its factorization.

14073221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9990.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 14073221 is about 3751.4291943205. The cubic root of 14073221 is about 241.4336698985.

The spelling of 14073221 in words is "fourteen million, seventy-three thousand, two hundred twenty-one".

Divisors: 1 1697 8293 14073221