20983741 has 2 divisors, whose sum is σ = 20983742. Its totient is φ = 20983740.

The previous prime is 20983727. The next prime is 20983769. The reversal of 20983741 is 14738902.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17935225 + 3048516 = 4235^2 + 1746^2 .

It is a cyclic number.

It is not a de Polignac number, because 20983741 - 2⁵ = 20983709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20983697 and 20983706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20983141) 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 as a sum of consecutive naturals, namely, 10491870 + 10491871.

It is an arithmetic number, because the mean of its divisors is an integer number (10491871).

Almost surely, 2^20983741 is an apocalyptic number.

It is an amenable number.

20983741 is a deficient number, since it is larger than the sum of its proper divisors (1).

20983741 is an equidigital number, since it uses as much as digits as its factorization.

20983741 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 20983741 is about 4580.8013491091. The cubic root of 20983741 is about 275.8211971144.

The spelling of 20983741 in words is "twenty million, nine hundred eighty-three thousand, seven hundred forty-one".