28693303 has 2 divisors, whose sum is σ = 28693304. Its totient is φ = 28693302.

The previous prime is 28693283. The next prime is 28693309. The reversal of 28693303 is 30339682.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28693303 - 2⁵ = 28693271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28693309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14346651 + 14346652.

It is an arithmetic number, because the mean of its divisors is an integer number (14346652).

Almost surely, 2^28693303 is an apocalyptic number.

28693303 is a deficient number, since it is larger than the sum of its proper divisors (1).

28693303 is an equidigital number, since it uses as much as digits as its factorization.

28693303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 28693303 is about 5356.6130157031. The cubic root of 28693303 is about 306.1447725110.

The spelling of 28693303 in words is "twenty-eight million, six hundred ninety-three thousand, three hundred three".