28080623 has 2 divisors, whose sum is σ = 28080624. Its totient is φ = 28080622.

The previous prime is 28080607. The next prime is 28080653. The reversal of 28080623 is 32608082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28080623 - 2⁴ = 28080607 is a prime.

It is a super-3 number, since 3×28080623³ (a number of 23 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28080653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14040311 + 14040312.

It is an arithmetic number, because the mean of its divisors is an integer number (14040312).

Almost surely, 2^28080623 is an apocalyptic number.

28080623 is a deficient number, since it is larger than the sum of its proper divisors (1).

28080623 is an equidigital number, since it uses as much as digits as its factorization.

28080623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 28080623 is about 5299.1153035200. The cubic root of 28080623 is about 303.9500689867.

The spelling of 28080623 in words is "twenty-eight million, eighty thousand, six hundred twenty-three".