20086570 has 24 divisors (see below), whose sum is σ = 42059844. Its totient is φ = 6886656.

The previous prime is 20086519. The next prime is 20086631. The reversal of 20086570 is 7568002.

It can be written as a sum of positive squares in 2 ways, for example, as 18653761 + 1432809 = 4319^2 + 1197^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20007 + ... + 20986.

Almost surely, 2^20086570 is an apocalyptic number.

20086570 is an abundant number, since it is smaller than the sum of its proper divisors (21973274).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20086570 is a wasteful number, since it uses less digits than its factorization.

20086570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41014 (or 41007 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 20086570 is about 4481.8043241534. The cubic root of 20086570 is about 271.8328431574.

The spelling of 20086570 in words is "twenty million, eighty-six thousand, five hundred seventy".