1282644 has 72 divisors (see below), whose sum is σ = 3669120. Its totient is φ = 374400.

The previous prime is 1282639. The next prime is 1282649. The reversal of 1282644 is 4462821.

1282644 is a `hidden beast` number, since 12 + 8 + 2 + 644 = 666.

It is an interprime number because it is at equal distance from previous prime (1282639) and next prime (1282649).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1282649) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16197 + ... + 16275.

It is an arithmetic number, because the mean of its divisors is an integer number (50960).

2^1282644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1282644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1834560).

1282644 is an abundant number, since it is smaller than the sum of its proper divisors (2386476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1282644 is a wasteful number, since it uses less digits than its factorization.

1282644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141 (or 136 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 1282644 is about 1132.5387410592. The cubic root of 1282644 is about 108.6514128329.

It can be divided in two parts, 128 and 2644, that added together give a palindrome (2772).

The spelling of 1282644 in words is "one million, two hundred eighty-two thousand, six hundred forty-four".