20726116 has 6 divisors (see below), whose sum is σ = 36270710. Its totient is φ = 10363056.

The previous prime is 20726113. The next prime is 20726117. The reversal of 20726116 is 61162702.

It can be written as a sum of positive squares in only one way, i.e., 15681600 + 5044516 = 3960^2 + 2246^2 .

It is not an unprimeable number, because it can be changed into a prime (20726113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2590761 + ... + 2590768.

Almost surely, 2^20726116 is an apocalyptic number.

It is an amenable number.

20726116 is a deficient number, since it is larger than the sum of its proper divisors (15544594).

20726116 is a wasteful number, since it uses less digits than its factorization.

20726116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5181533 (or 5181531 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 20726116 is about 4552.5944251602. The cubic root of 20726116 is about 274.6877602122.

Adding to 20726116 its reverse (61162702), we get a palindrome (81888818).

The spelling of 20726116 in words is "twenty million, seven hundred twenty-six thousand, one hundred sixteen".