20841116 has 24 divisors (see below), whose sum is σ = 39445056. Its totient is φ = 9597440.

The previous prime is 20841113. The next prime is 20841179. The reversal of 20841116 is 61114802.

It is a super-2 number, since 2×20841116² = 868704232250912, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20841091 and 20841100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20841113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65 + ... + 6456.

It is an arithmetic number, because the mean of its divisors is an integer number (1643544).

Almost surely, 2^20841116 is an apocalyptic number.

It is an amenable number.

20841116 is a deficient number, since it is larger than the sum of its proper divisors (18603940).

20841116 is a wasteful number, since it uses less digits than its factorization.

20841116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6589 (or 6587 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 20841116 is about 4565.2071146882. The cubic root of 20841116 is about 275.1948635410.

Adding to 20841116 its reverse (61114802), we get a palindrome (81955918).

The spelling of 20841116 in words is "twenty million, eight hundred forty-one thousand, one hundred sixteen".