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1282 = 2641

1282 has 4 divisors (see below), whose sum is σ = 1926. Its totient is φ = 640.

The previous prime is 1279. The next prime is 1283. The reversal of 1282 is 2821.

1282 is an esthetic number in base 14, because in such base its adjacent digits differ by 1.

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

It can be written as a sum of positive squares in only one way, i.e., 841 + 441 = 29^2 + 21^2 .

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 12, base 13 and base 14.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (3) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 319 + ... + 322.

1282 is a deficient number, since it is larger than the sum of its proper divisors (644).

1282 is an equidigital number, since it uses as much as digits as its factorization.

1282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643.

The product of its digits is 32, while the sum is 13.

The square root of 1282 is about 35.8050275799. The cubic root of 1282 is about 10.8633225603.

It can be divided in two parts, 128 and 2, that multiplied together give a 8-th power (256 = 28).

The spelling of 1282 in words is "one thousand, two hundred eighty-two".

Divisors: 1 2 641 1282