28605023 has 2 divisors, whose sum is σ = 28605024. Its totient is φ = 28605022.

The previous prime is 28605007. The next prime is 28605043. The reversal of 28605023 is 32050682.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28605023 - 2⁴ = 28605007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28604983 and 28605001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28605043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14302511 + 14302512.

It is an arithmetic number, because the mean of its divisors is an integer number (14302512).

Almost surely, 2^28605023 is an apocalyptic number.

28605023 is a deficient number, since it is larger than the sum of its proper divisors (1).

28605023 is an equidigital number, since it uses as much as digits as its factorization.

28605023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 28605023 is about 5348.3663861033. The cubic root of 28605023 is about 305.8304805290.

The spelling of 28605023 in words is "twenty-eight million, six hundred five thousand, twenty-three".