27840343 has 2 divisors, whose sum is σ = 27840344. Its totient is φ = 27840342.

The previous prime is 27840289. The next prime is 27840361. The reversal of 27840343 is 34304872.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27840343 - 2¹³ = 27832151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27844343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13920171 + 13920172.

It is an arithmetic number, because the mean of its divisors is an integer number (13920172).

Almost surely, 2^27840343 is an apocalyptic number.

27840343 is a deficient number, since it is larger than the sum of its proper divisors (1).

27840343 is an equidigital number, since it uses as much as digits as its factorization.

27840343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 27840343 is about 5276.3948866627. The cubic root of 27840343 is about 303.0806387486.

The spelling of 27840343 in words is "twenty-seven million, eight hundred forty thousand, three hundred forty-three".