20707841 has 24 divisors (see below), whose sum is σ = 26604864. Its totient is φ = 15936480.

The previous prime is 20707807. The next prime is 20707847. The reversal of 20707841 is 14870702.

It is not a de Polignac number, because 20707841 - 2¹⁴ = 20691457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20707847) 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 23 ways as a sum of consecutive naturals, for example, 55331 + ... + 55703.

It is an arithmetic number, because the mean of its divisors is an integer number (1108536).

Almost surely, 2^20707841 is an apocalyptic number.

It is an amenable number.

20707841 is a deficient number, since it is larger than the sum of its proper divisors (5897023).

20707841 is a wasteful number, since it uses less digits than its factorization.

20707841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501 (or 494 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 20707841 is about 4550.5868852270. The cubic root of 20707841 is about 274.6070022777.

The spelling of 20707841 in words is "twenty million, seven hundred seven thousand, eight hundred forty-one".