20682908 has 6 divisors (see below), whose sum is σ = 36195096. Its totient is φ = 10341452.

The previous prime is 20682899. The next prime is 20682917. The reversal of 20682908 is 80928602.

It is an interprime number because it is at equal distance from previous prime (20682899) and next prime (20682917).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2585360 + ... + 2585367.

It is an arithmetic number, because the mean of its divisors is an integer number (6032516).

Almost surely, 2^20682908 is an apocalyptic number.

It is an amenable number.

20682908 is a deficient number, since it is larger than the sum of its proper divisors (15512188).

20682908 is a wasteful number, since it uses less digits than its factorization.

20682908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5170731 (or 5170729 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 20682908 is about 4547.8465233559. The cubic root of 20682908 is about 274.4967457143.

It can be divided in two parts, 20682 and 908, that multiplied together give a triangular number (18779256 = T₆₁₂₈).

The spelling of 20682908 in words is "twenty million, six hundred eighty-two thousand, nine hundred eight".