1782016 has 18 divisors (see below), whose sum is σ = 3557582. Its totient is φ = 890880.

The previous prime is 1781981. The next prime is 1782043. The reversal of 1782016 is 6102871.

It can be written as a sum of positive squares in only one way, i.e., 1679616 + 102400 = 1296^2 + 320^2 .

It is a plaindrome in base 14.

It is an unprimeable number.

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, 3225 + ... + 3736.

2^1782016 is an apocalyptic number.

1782016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1782016 is a deficient number, since it is larger than the sum of its proper divisors (1775566).

1782016 is an frugal number, since it uses more digits than its factorization.

1782016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6977 (or 6963 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 1782016 is about 1334.9217205514. The cubic root of 1782016 is about 121.2375634674.

Adding to 1782016 its reverse (6102871), we get a palindrome (7884887).

The spelling of 1782016 in words is "one million, seven hundred eighty-two thousand, sixteen".