28427039 has 2 divisors, whose sum is σ = 28427040. Its totient is φ = 28427038.

The previous prime is 28427033. The next prime is 28427053. The reversal of 28427039 is 93072482.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28427039 - 2⁴ = 28427023 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28427033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14213519 + 14213520.

It is an arithmetic number, because the mean of its divisors is an integer number (14213520).

Almost surely, 2^28427039 is an apocalyptic number.

28427039 is a deficient number, since it is larger than the sum of its proper divisors (1).

28427039 is an equidigital number, since it uses as much as digits as its factorization.

28427039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 28427039 is about 5331.7013232176. The cubic root of 28427039 is about 305.1948553304.

The spelling of 28427039 in words is "twenty-eight million, four hundred twenty-seven thousand, thirty-nine".