20898608 has 20 divisors (see below), whose sum is σ = 40722840. Its totient is φ = 10389504.

The previous prime is 20898587. The next prime is 20898629. The reversal of 20898608 is 80689802.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20898587) and next prime (20898629).

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 in 3 ways as a sum of consecutive naturals, for example, 785 + ... + 6512.

It is an arithmetic number, because the mean of its divisors is an integer number (2036142).

Almost surely, 2^20898608 is an apocalyptic number.

It is an amenable number.

20898608 is a deficient number, since it is larger than the sum of its proper divisors (19824232).

20898608 is a wasteful number, since it uses less digits than its factorization.

20898608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7484 (or 7478 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 41.

The square root of 20898608 is about 4571.4995351635. The cubic root of 20898608 is about 275.4476807290.

The spelling of 20898608 in words is "twenty million, eight hundred ninety-eight thousand, six hundred eight".