28404353 has 2 divisors, whose sum is σ = 28404354. Its totient is φ = 28404352.

The previous prime is 28404329. The next prime is 28404361. The reversal of 28404353 is 35340482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24275329 + 4129024 = 4927^2 + 2032^2 .

It is a cyclic number.

It is not a de Polignac number, because 28404353 - 2⁶ = 28404289 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (28404853) 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, 14202176 + 14202177.

It is an arithmetic number, because the mean of its divisors is an integer number (14202177).

Almost surely, 2^28404353 is an apocalyptic number.

It is an amenable number.

28404353 is a deficient number, since it is larger than the sum of its proper divisors (1).

28404353 is an equidigital number, since it uses as much as digits as its factorization.

28404353 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 28404353 is about 5329.5734350884. The cubic root of 28404353 is about 305.1136475163.

The spelling of 28404353 in words is "twenty-eight million, four hundred four thousand, three hundred fifty-three".