20568116 has 12 divisors (see below), whose sum is σ = 36194340. Its totient is φ = 10226880.

The previous prime is 20568103. The next prime is 20568131. The reversal of 20568116 is 61186502.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5044516 + 15523600 = 2246^2 + 3940^2 .

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, 13481 + ... + 14928.

It is an arithmetic number, because the mean of its divisors is an integer number (3016195).

Almost surely, 2^20568116 is an apocalyptic number.

It is an amenable number.

20568116 is a deficient number, since it is larger than the sum of its proper divisors (15626224).

20568116 is a wasteful number, since it uses less digits than its factorization.

20568116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28594 (or 28592 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 20568116 is about 4535.2084847336. The cubic root of 20568116 is about 273.9879761005.

The spelling of 20568116 in words is "twenty million, five hundred sixty-eight thousand, one hundred sixteen".