20682741 has 16 divisors (see below), whose sum is σ = 28454400. Its totient is φ = 13353408.

The previous prime is 20682719. The next prime is 20682743. The reversal of 20682741 is 14728602.

It is not a de Polignac number, because 20682741 - 2⁶ = 20682677 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20682699 and 20682708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20682743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42940 + ... + 43418.

It is an arithmetic number, because the mean of its divisors is an integer number (1778400).

Almost surely, 2^20682741 is an apocalyptic number.

It is an amenable number.

20682741 is a deficient number, since it is larger than the sum of its proper divisors (7771659).

20682741 is a wasteful number, since it uses less digits than its factorization.

20682741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 20682741 is about 4547.8281629807. The cubic root of 20682741 is about 274.4960069226.

The spelling of 20682741 in words is "twenty million, six hundred eighty-two thousand, seven hundred forty-one".