28434817 has 2 divisors, whose sum is σ = 28434818. Its totient is φ = 28434816.

The previous prime is 28434797. The next prime is 28434823. The reversal of 28434817 is 71843482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17943696 + 10491121 = 4236^2 + 3239^2 .

It is a cyclic number.

It is not a de Polignac number, because 28434817 - 2¹⁹ = 27910529 is a prime.

It is not a weakly prime, because it can be changed into another prime (28434827) 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, 14217408 + 14217409.

It is an arithmetic number, because the mean of its divisors is an integer number (14217409).

Almost surely, 2^28434817 is an apocalyptic number.

It is an amenable number.

28434817 is a deficient number, since it is larger than the sum of its proper divisors (1).

28434817 is an equidigital number, since it uses as much as digits as its factorization.

28434817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43008, while the sum is 37.

The square root of 28434817 is about 5332.4306840314. The cubic root of 28434817 is about 305.2226878589. Note that the first 3 decimals are identical.

The spelling of 28434817 in words is "twenty-eight million, four hundred thirty-four thousand, eight hundred seventeen".