28355123 has 2 divisors, whose sum is σ = 28355124. Its totient is φ = 28355122.

The previous prime is 28355083. The next prime is 28355143. The reversal of 28355123 is 32155382.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28355123 - 2¹² = 28351027 is a prime.

It is not a weakly prime, because it can be changed into another prime (28355143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14177561 + 14177562.

It is an arithmetic number, because the mean of its divisors is an integer number (14177562).

Almost surely, 2^28355123 is an apocalyptic number.

28355123 is a deficient number, since it is larger than the sum of its proper divisors (1).

28355123 is an equidigital number, since it uses as much as digits as its factorization.

28355123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 29.

The square root of 28355123 is about 5324.9528636411. The cubic root of 28355123 is about 304.9372727761.

The spelling of 28355123 in words is "twenty-eight million, three hundred fifty-five thousand, one hundred twenty-three".