20850936 has 32 divisors (see below), whose sum is σ = 52909440. Its totient is φ = 6846048.

The previous prime is 20850931. The next prime is 20850953. The reversal of 20850936 is 63905802.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20850897 and 20850906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20850931) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4876 + ... + 8091.

It is an arithmetic number, because the mean of its divisors is an integer number (1653420).

Almost surely, 2^20850936 is an apocalyptic number.

It is an amenable number.

20850936 is an abundant number, since it is smaller than the sum of its proper divisors (32058504).

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

20850936 is a wasteful number, since it uses less digits than its factorization.

20850936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13043 (or 13039 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 20850936 is about 4566.2825142560. The cubic root of 20850936 is about 275.2380792246.

The spelling of 20850936 in words is "twenty million, eight hundred fifty thousand, nine hundred thirty-six".