20808848 has 10 divisors (see below), whose sum is σ = 40317174. Its totient is φ = 10404416.

The previous prime is 20808841. The next prime is 20808871. The reversal of 20808848 is 84880802.

It can be written as a sum of positive squares in only one way, i.e., 19784704 + 1024144 = 4448^2 + 1012^2 .

It is not an unprimeable number, because it can be changed into a prime (20808841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650261 + ... + 650292.

Almost surely, 2^20808848 is an apocalyptic number.

It is an amenable number.

20808848 is a deficient number, since it is larger than the sum of its proper divisors (19508326).

20808848 is a wasteful number, since it uses less digits than its factorization.

20808848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1300561 (or 1300555 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 38.

The square root of 20808848 is about 4561.6716234293. The cubic root of 20808848 is about 275.0527634295.

The spelling of 20808848 in words is "twenty million, eight hundred eight thousand, eight hundred forty-eight".