28084361 has 2 divisors, whose sum is σ = 28084362. Its totient is φ = 28084360.

The previous prime is 28084349. The next prime is 28084393. The reversal of 28084361 is 16348082.

It is an a-pointer prime, because the next prime (28084393) can be obtained adding 28084361 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27237961 + 846400 = 5219^2 + 920^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28084361 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28084061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14042180 + 14042181.

It is an arithmetic number, because the mean of its divisors is an integer number (14042181).

Almost surely, 2^28084361 is an apocalyptic number.

It is an amenable number.

28084361 is a deficient number, since it is larger than the sum of its proper divisors (1).

28084361 is an equidigital number, since it uses as much as digits as its factorization.

28084361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 28084361 is about 5299.4679921668. The cubic root of 28084361 is about 303.9635553321.

The spelling of 28084361 in words is "twenty-eight million, eighty-four thousand, three hundred sixty-one".