20885356 has 12 divisors (see below), whose sum is σ = 36690192. Its totient is φ = 10402448.

The previous prime is 20885341. The next prime is 20885383. The reversal of 20885356 is 65358802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8875 + ... + 10978.

It is an arithmetic number, because the mean of its divisors is an integer number (3057516).

Almost surely, 2^20885356 is an apocalyptic number.

It is an amenable number.

20885356 is a deficient number, since it is larger than the sum of its proper divisors (15804836).

20885356 is a wasteful number, since it uses less digits than its factorization.

20885356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20120 (or 20118 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 20885356 is about 4570.0498903185. The cubic root of 20885356 is about 275.3894471139.

The spelling of 20885356 in words is "twenty million, eight hundred eighty-five thousand, three hundred fifty-six".