28333817 has 2 divisors, whose sum is σ = 28333818. Its totient is φ = 28333816.

The previous prime is 28333763. The next prime is 28333843. The reversal of 28333817 is 71833382.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19219456 + 9114361 = 4384^2 + 3019^2 .

It is a cyclic number.

It is not a de Polignac number, because 28333817 - 2⁸ = 28333561 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28333117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14166908 + 14166909.

It is an arithmetic number, because the mean of its divisors is an integer number (14166909).

Almost surely, 2^28333817 is an apocalyptic number.

It is an amenable number.

28333817 is a deficient number, since it is larger than the sum of its proper divisors (1).

28333817 is an equidigital number, since it uses as much as digits as its factorization.

28333817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 35.

The square root of 28333817 is about 5322.9519066022. The cubic root of 28333817 is about 304.8608771575.

The spelling of 28333817 in words is "twenty-eight million, three hundred thirty-three thousand, eight hundred seventeen".