20284741 has 2 divisors, whose sum is σ = 20284742. Its totient is φ = 20284740.

The previous prime is 20284727. The next prime is 20284763. The reversal of 20284741 is 14748202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12047841 + 8236900 = 3471^2 + 2870^2 .

It is a cyclic number.

It is not a de Polignac number, because 20284741 - 2¹⁹ = 19760453 is a prime.

It is a super-2 number, since 2×20284741² = 822941434874162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20284441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10142370 + 10142371.

It is an arithmetic number, because the mean of its divisors is an integer number (10142371).

Almost surely, 2^20284741 is an apocalyptic number.

It is an amenable number.

20284741 is a deficient number, since it is larger than the sum of its proper divisors (1).

20284741 is an equidigital number, since it uses as much as digits as its factorization.

20284741 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 20284741 is about 4503.8584569234. The cubic root of 20284741 is about 272.7238729239.

It can be divided in two parts, 20284 and 741, that added together give a square (21025 = 145²).

The spelling of 20284741 in words is "twenty million, two hundred eighty-four thousand, seven hundred forty-one".