33840073 has 2 divisors, whose sum is σ = 33840074. Its totient is φ = 33840072.

The previous prime is 33840049. The next prime is 33840101. The reversal of 33840073 is 37004833.

It is an a-pointer prime, because the next prime (33840101) can be obtained adding 33840073 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31270464 + 2569609 = 5592^2 + 1603^2 .

It is an emirp because it is prime and its reverse (37004833) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33840073 - 2²⁵ = 285641 is a prime.

It is a super-2 number, since 2×33840073² = 2290301081290658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33840173) 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, 16920036 + 16920037.

It is an arithmetic number, because the mean of its divisors is an integer number (16920037).

Almost surely, 2^33840073 is an apocalyptic number.

It is an amenable number.

33840073 is a deficient number, since it is larger than the sum of its proper divisors (1).

33840073 is an equidigital number, since it uses as much as digits as its factorization.

33840073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 33840073 is about 5817.2221033755. Note that the first 3 decimals coincide. The cubic root of 33840073 is about 323.4524390853.

The spelling of 33840073 in words is "thirty-three million, eight hundred forty thousand, seventy-three".