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1227 = 3409
BaseRepresentation
bin10011001011
31200110
4103023
514402
65403
73402
oct2313
91613
101227
11a16
12863
13735
14639
1556c
hex4cb

1227 has 4 divisors (see below), whose sum is σ = 1640. Its totient is φ = 816.

The previous prime is 1223. The next prime is 1229. The reversal of 1227 is 7221.

Adding to 1227 its reverse (7221), we get a palindrome (8448).

It can be divided in two parts, 12 and 27, that multiplied together give a square (324 = 182).

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1227 - 22 = 1223 is a prime.

It is a D-number.

It is a Duffinian number.

1227 is a modest number, since divided by 27 gives 12 as remainder.

It is a plaindrome in base 10 and base 15.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (1223) 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, 202 + ... + 207.

It is an arithmetic number, because the mean of its divisors is an integer number (410).

1227 is a deficient number, since it is larger than the sum of its proper divisors (413).

1227 is an equidigital number, since it uses as much as digits as its factorization.

1227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412.

The product of its digits is 28, while the sum is 12.

The square root of 1227 is about 35.0285597763. The cubic root of 1227 is about 10.7056947006.

The spelling of 1227 in words is "one thousand, two hundred twenty-seven", and thus it is an iban number.

Divisors: 1 3 409 1227