20510068 has 12 divisors (see below), whose sum is σ = 36263332. Its totient is φ = 10149120.

The previous prime is 20510053. The next prime is 20510069. The reversal of 20510068 is 86001502.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11437924 + 9072144 = 3382^2 + 3012^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20510069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26043 + ... + 26818.

Almost surely, 2^20510068 is an apocalyptic number.

It is an amenable number.

20510068 is a deficient number, since it is larger than the sum of its proper divisors (15753264).

20510068 is a wasteful number, since it uses less digits than its factorization.

20510068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52962 (or 52960 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 20510068 is about 4528.8042571964. The cubic root of 20510068 is about 273.7299806743.

The spelling of 20510068 in words is "twenty million, five hundred ten thousand, sixty-eight".