20600856 has 48 divisors (see below), whose sum is σ = 56019600. Its totient is φ = 6839232.

The previous prime is 20600837. The next prime is 20600857. The reversal of 20600856 is 65800602.

20600856 is a `hidden beast` number, since 2 + 0 + 600 + 8 + 56 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20600857) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25450 + ... + 26246.

It is an arithmetic number, because the mean of its divisors is an integer number (1167075).

Almost surely, 2^20600856 is an apocalyptic number.

It is an amenable number.

20600856 is an abundant number, since it is smaller than the sum of its proper divisors (35418744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20600856 is a wasteful number, since it uses less digits than its factorization.

20600856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1168 (or 1161 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 20600856 is about 4538.8165858514. The cubic root of 20600856 is about 274.1332756005.

The spelling of 20600856 in words is "twenty million, six hundred thousand, eight hundred fifty-six".