28020023 has 2 divisors, whose sum is σ = 28020024. Its totient is φ = 28020022.

The previous prime is 28019993. The next prime is 28020043. The reversal of 28020023 is 32002082.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28020023 - 2¹² = 28015927 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28019983 and 28020010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28020043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14010011 + 14010012.

It is an arithmetic number, because the mean of its divisors is an integer number (14010012).

Almost surely, 2^28020023 is an apocalyptic number.

28020023 is a deficient number, since it is larger than the sum of its proper divisors (1).

28020023 is an equidigital number, since it uses as much as digits as its factorization.

28020023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 28020023 is about 5293.3942796659. The cubic root of 28020023 is about 303.7312628227.

The spelling of 28020023 in words is "twenty-eight million, twenty thousand, twenty-three".