28247903 has 2 divisors, whose sum is σ = 28247904. Its totient is φ = 28247902.

The previous prime is 28247899. The next prime is 28247917. The reversal of 28247903 is 30974282.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28247903 - 2² = 28247899 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28247953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14123951 + 14123952.

It is an arithmetic number, because the mean of its divisors is an integer number (14123952).

Almost surely, 2^28247903 is an apocalyptic number.

28247903 is a deficient number, since it is larger than the sum of its proper divisors (1).

28247903 is an equidigital number, since it uses as much as digits as its factorization.

28247903 is an evil number, because the sum of its binary digits is even.

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

The square root of 28247903 is about 5314.8756335403. The cubic root of 28247903 is about 304.5524314217.

The spelling of 28247903 in words is "twenty-eight million, two hundred forty-seven thousand, nine hundred three".