2116784 has 10 divisors (see below), whose sum is σ = 4101300. Its totient is φ = 1058384.

The previous prime is 2116783. The next prime is 2116799. The reversal of 2116784 is 4876112.

It is not an unprimeable number, because it can be changed into a prime (2116783) 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, 66134 + ... + 66165.

It is an arithmetic number, because the mean of its divisors is an integer number (410130).

2^2116784 is an apocalyptic number.

It is an amenable number.

2116784 is a deficient number, since it is larger than the sum of its proper divisors (1984516).

2116784 is a wasteful number, since it uses less digits than its factorization.

2116784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132307 (or 132301 counting only the distinct ones).

The product of its digits is 2688, while the sum is 29.

The square root of 2116784 is about 1454.9171797735. The cubic root of 2116784 is about 128.3981741636.

It can be divided in two parts, 2116 and 784, that multiplied together give a square (1658944 = 1288²).

The spelling of 2116784 in words is "two million, one hundred sixteen thousand, seven hundred eighty-four".