20008308 has 12 divisors (see below), whose sum is σ = 46686080. Its totient is φ = 6669432.

The previous prime is 20008301. The next prime is 20008319. The reversal of 20008308 is 80380002.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20008301) 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, 833668 + ... + 833691.

Almost surely, 2^20008308 is an apocalyptic number.

It is an amenable number.

20008308 is an abundant number, since it is smaller than the sum of its proper divisors (26677772).

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

20008308 is a wasteful number, since it uses less digits than its factorization.

20008308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1667366 (or 1667364 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 20008308 is about 4473.0647211951. The cubic root of 20008308 is about 271.4793420923.

The spelling of 20008308 in words is "twenty million, eight thousand, three hundred eight".