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14277221 = 72039603
BaseRepresentation
bin110110011101…
…101001100101
3222212100122222
4312131221211
512123332341
61230002125
7232232360
oct66355145
928770588
1014277221
118071762
124946345
132c5b67a
141c790d7
1513c044b
hexd9da65

14277221 has 4 divisors (see below), whose sum is σ = 16316832. Its totient is φ = 12237612.

The previous prime is 14277217. The next prime is 14277223. The reversal of 14277221 is 12277241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 14277221 - 22 = 14277217 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14277223) 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, 1019795 + ... + 1019808.

It is an arithmetic number, because the mean of its divisors is an integer number (4079208).

Almost surely, 214277221 is an apocalyptic number.

It is an amenable number.

14277221 is a deficient number, since it is larger than the sum of its proper divisors (2039611).

14277221 is an equidigital number, since it uses as much as digits as its factorization.

14277221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2039610.

The product of its digits is 1568, while the sum is 26.

The square root of 14277221 is about 3778.5210069550. The cubic root of 14277221 is about 242.5946546561.

The spelling of 14277221 in words is "fourteen million, two hundred seventy-seven thousand, two hundred twenty-one".

Divisors: 1 7 2039603 14277221