20956041 has 12 divisors (see below), whose sum is σ = 30841668. Its totient is φ = 13706784.

The previous prime is 20956021. The next prime is 20956051. The reversal of 20956041 is 14065902.

It can be written as a sum of positive squares in 2 ways, for example, as 6780816 + 14175225 = 2604^2 + 3765^2 .

It is not a de Polignac number, because 20956041 - 2¹⁰ = 20955017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20955996 and 20956014.

It is not an unprimeable number, because it can be changed into a prime (20956021) 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, 21490 + ... + 22443.

It is an arithmetic number, because the mean of its divisors is an integer number (2570139).

Almost surely, 2^20956041 is an apocalyptic number.

It is an amenable number.

20956041 is a deficient number, since it is larger than the sum of its proper divisors (9885627).

20956041 is a wasteful number, since it uses less digits than its factorization.

20956041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43992 (or 43989 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 20956041 is about 4577.7768621898. The cubic root of 20956041 is about 275.6997759386.

The spelling of 20956041 in words is "twenty million, nine hundred fifty-six thousand, forty-one".