20786116 has 24 divisors (see below), whose sum is σ = 39822104. Its totient is φ = 9434880.

The previous prime is 20786111. The next prime is 20786131. The reversal of 20786116 is 61168702.

It can be written as a sum of positive squares in 4 ways, for example, as 715716 + 20070400 = 846^2 + 4480^2 .

It is not an unprimeable number, because it can be changed into a prime (20786111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105 + ... + 6448.

Almost surely, 2^20786116 is an apocalyptic number.

20786116 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20786116 is a deficient number, since it is larger than the sum of its proper divisors (19035988).

20786116 is a wasteful number, since it uses less digits than its factorization.

20786116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6631 (or 6629 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 20786116 is about 4559.1793121131. The cubic root of 20786116 is about 274.9525692303.

It can be divided in two parts, 20786 and 116, that added together give a palindrome (20902).

The spelling of 20786116 in words is "twenty million, seven hundred eighty-six thousand, one hundred sixteen".