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20746241 is a prime number
BaseRepresentation
bin100111100100…
…1000000000001
31110001000111022
41033021000001
520302334431
62020355225
7341224445
oct117110001
943030438
1020746241
111078aa5a
126b45b15
1343b4ca9
142a80825
151c4c07b
hex13c9001

20746241 has 2 divisors, whose sum is σ = 20746242. Its totient is φ = 20746240.

The previous prime is 20746217. The next prime is 20746247. The reversal of 20746241 is 14264702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16982641 + 3763600 = 4121^2 + 1940^2 .

It is a cyclic number.

It is not a de Polignac number, because 20746241 - 26 = 20746177 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20746241.

It is not a weakly prime, because it can be changed into another prime (20746247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10373120 + 10373121.

It is an arithmetic number, because the mean of its divisors is an integer number (10373121).

Almost surely, 220746241 is an apocalyptic number.

It is an amenable number.

20746241 is a deficient number, since it is larger than the sum of its proper divisors (1).

20746241 is an equidigital number, since it uses as much as digits as its factorization.

20746241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 20746241 is about 4554.8041670307. The cubic root of 20746241 is about 274.7766384643.

The spelling of 20746241 in words is "twenty million, seven hundred forty-six thousand, two hundred forty-one".