20785941 has 12 divisors (see below), whose sum is σ = 32753760. Its totient is φ = 12597480.

The previous prime is 20785937. The next prime is 20785949. The reversal of 20785941 is 14958702.

It is not a de Polignac number, because 20785941 - 2² = 20785937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20785896 and 20785905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20785949) 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 11 ways as a sum of consecutive naturals, for example, 104881 + ... + 105078.

It is an arithmetic number, because the mean of its divisors is an integer number (2729480).

Almost surely, 2^20785941 is an apocalyptic number.

It is an amenable number.

20785941 is a deficient number, since it is larger than the sum of its proper divisors (11967819).

20785941 is a wasteful number, since it uses less digits than its factorization.

20785941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209976 (or 209973 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 20785941 is about 4559.1601200221. The cubic root of 20785941 is about 274.9517976121.

The spelling of 20785941 in words is "twenty million, seven hundred eighty-five thousand, nine hundred forty-one".