28258903 has 2 divisors, whose sum is σ = 28258904. Its totient is φ = 28258902.

The previous prime is 28258883. The next prime is 28258907. The reversal of 28258903 is 30985282.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28258903 - 2¹³ = 28250711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28258907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14129451 + 14129452.

It is an arithmetic number, because the mean of its divisors is an integer number (14129452).

Almost surely, 2^28258903 is an apocalyptic number.

28258903 is a deficient number, since it is larger than the sum of its proper divisors (1).

28258903 is an equidigital number, since it uses as much as digits as its factorization.

28258903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 28258903 is about 5315.9103641803. The cubic root of 28258903 is about 304.5919581551.

It can be divided in two parts, 28258 and 903, that added together give a triangular number (29161 = T₂₄₁).

The spelling of 28258903 in words is "twenty-eight million, two hundred fifty-eight thousand, nine hundred three".