28703393 has 2 divisors, whose sum is σ = 28703394. Its totient is φ = 28703392.

The previous prime is 28703387. The next prime is 28703401. The reversal of 28703393 is 39330782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28174864 + 528529 = 5308^2 + 727^2 .

It is a cyclic number.

It is not a de Polignac number, because 28703393 - 2⁴ = 28703377 is a prime.

It is not a weakly prime, because it can be changed into another prime (28703093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14351696 + 14351697.

It is an arithmetic number, because the mean of its divisors is an integer number (14351697).

Almost surely, 2^28703393 is an apocalyptic number.

It is an amenable number.

28703393 is a deficient number, since it is larger than the sum of its proper divisors (1).

28703393 is an equidigital number, since it uses as much as digits as its factorization.

28703393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 28703393 is about 5357.5547594028. The cubic root of 28703393 is about 306.1806535753.

The spelling of 28703393 in words is "twenty-eight million, seven hundred three thousand, three hundred ninety-three".