1681282 has 8 divisors (see below), whose sum is σ = 2563452. Its totient is φ = 826800.

The previous prime is 1681279. The next prime is 1681289. The reversal of 1681282 is 2821861.

It can be written as a sum of positive squares in 2 ways, for example, as 1565001 + 116281 = 1251^2 + 341^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a d-powerful number, because it can be written as 1 + 6⁸ + 8² + 1 + 2⁹ + 8² + 2¹⁰ .

It is a self number, because there is not a number n which added to its sum of digits gives 1681282.

It is not an unprimeable number, because it can be changed into a prime (1681289) 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, 6769 + ... + 7012.

2^1681282 is an apocalyptic number.

1681282 is a deficient number, since it is larger than the sum of its proper divisors (882170).

1681282 is a wasteful number, since it uses less digits than its factorization.

1681282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13844.

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

The square root of 1681282 is about 1296.6425876085. The cubic root of 1681282 is about 118.9086698905.

The spelling of 1681282 in words is "one million, six hundred eighty-one thousand, two hundred eighty-two".