20002908 has 12 divisors (see below), whose sum is σ = 46673480. Its totient is φ = 6667632.

The previous prime is 20002907. The next prime is 20002919. The reversal of 20002908 is 80920002.

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 (20002907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 833443 + ... + 833466.

Almost surely, 2^20002908 is an apocalyptic number.

It is an amenable number.

20002908 is an abundant number, since it is smaller than the sum of its proper divisors (26670572).

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

20002908 is a wasteful number, since it uses less digits than its factorization.

20002908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1666916 (or 1666914 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 20002908 is about 4472.4610674661. The cubic root of 20002908 is about 271.4549168993.

It can be divided in two parts, 20002 and 908, that added together give a triangular number (20910 = T₂₀₄).

The spelling of 20002908 in words is "twenty million, two thousand, nine hundred eight".