20706116 has 12 divisors (see below), whose sum is σ = 37485420. Its totient is φ = 9996000.

The previous prime is 20706071. The next prime is 20706121. The reversal of 20706116 is 61160702.

It can be written as a sum of positive squares in 2 ways, for example, as 9947716 + 10758400 = 3154^2 + 3280^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20706091 and 20706100.

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, 89135 + ... + 89366.

It is an arithmetic number, because the mean of its divisors is an integer number (3123785).

Almost surely, 2^20706116 is an apocalyptic number.

It is an amenable number.

20706116 is a deficient number, since it is larger than the sum of its proper divisors (16779304).

20706116 is a wasteful number, since it uses less digits than its factorization.

20706116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178534 (or 178532 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 20706116 is about 4550.3973452876. The cubic root of 20706116 is about 274.5993769820.

Adding to 20706116 its reverse (61160702), we get a palindrome (81866818).

The spelling of 20706116 in words is "twenty million, seven hundred six thousand, one hundred sixteen".