20608856 has 8 divisors (see below), whose sum is σ = 38641620. Its totient is φ = 10304424.

The previous prime is 20608837. The next prime is 20608871. The reversal of 20608856 is 65880602.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1288046 + ... + 1288061.

Almost surely, 2^20608856 is an apocalyptic number.

It is an amenable number.

20608856 is a deficient number, since it is larger than the sum of its proper divisors (18032764).

20608856 is a wasteful number, since it uses less digits than its factorization.

20608856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2576113 (or 2576109 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 20608856 is about 4539.6977872982. The cubic root of 20608856 is about 274.1687560418.

The spelling of 20608856 in words is "twenty million, six hundred eight thousand, eight hundred fifty-six".