20075986 has 12 divisors (see below), whose sum is σ = 35030718. Its totient is φ = 8603952.

The previous prime is 20075981. The next prime is 20075999. The reversal of 20075986 is 68957002.

It can be written as a sum of positive squares in only one way, i.e., 19633761 + 442225 = 4431^2 + 665^2 .

It is not an unprimeable number, because it can be changed into a prime (20075981) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 102331 + ... + 102526.

Almost surely, 2^20075986 is an apocalyptic number.

20075986 is a deficient number, since it is larger than the sum of its proper divisors (14954732).

20075986 is a wasteful number, since it uses less digits than its factorization.

20075986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204873 (or 204866 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 20075986 is about 4480.6233941272. The cubic root of 20075986 is about 271.7850901183.

The spelling of 20075986 in words is "twenty million, seventy-five thousand, nine hundred eighty-six".