1282816 has 18 divisors (see below), whose sum is σ = 2561132. Its totient is φ = 641280.

The previous prime is 1282807. The next prime is 1282817. The reversal of 1282816 is 6182821.

It is a super-3 number, since 3×1282816³ = 6333071028532543488, which contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1282817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2250 + ... + 2761.

2^1282816 is an apocalyptic number.

1282816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1282816 is a deficient number, since it is larger than the sum of its proper divisors (1278316).

1282816 is an frugal number, since it uses more digits than its factorization.

1282816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5027 (or 5013 counting only the distinct ones).

The product of its digits is 1536, while the sum is 28.

The square root of 1282816 is about 1132.6146741059. The cubic root of 1282816 is about 108.6562692617.

It can be divided in two parts, 12 and 82816, that added together give a palindrome (82828).

The spelling of 1282816 in words is "one million, two hundred eighty-two thousand, eight hundred sixteen".