20834036 has 12 divisors (see below), whose sum is σ = 36783012. Its totient is φ = 10324608.

The previous prime is 20834029. The next prime is 20834063. The reversal of 20834036 is 63043802.

It can be written as a sum of positive squares in 2 ways, for example, as 4024036 + 16810000 = 2006^2 + 4100^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20833996 and 20834014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22595 + ... + 23498.

It is an arithmetic number, because the mean of its divisors is an integer number (3065251).

Almost surely, 2^20834036 is an apocalyptic number.

It is an amenable number.

20834036 is a deficient number, since it is larger than the sum of its proper divisors (15948976).

20834036 is a wasteful number, since it uses less digits than its factorization.

20834036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46210 (or 46208 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 20834036 is about 4564.4316185041. The cubic root of 20834036 is about 275.1636975787.

Adding to 20834036 its reverse (63043802), we get a palindrome (83877838).

The spelling of 20834036 in words is "twenty million, eight hundred thirty-four thousand, thirty-six".