28002671 has 2 divisors, whose sum is σ = 28002672. Its totient is φ = 28002670.

The previous prime is 28002659. The next prime is 28002743. The reversal of 28002671 is 17620082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28002671 - 2⁶ = 28002607 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28002671.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28002071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14001335 + 14001336.

It is an arithmetic number, because the mean of its divisors is an integer number (14001336).

Almost surely, 2^28002671 is an apocalyptic number.

28002671 is a deficient number, since it is larger than the sum of its proper divisors (1).

28002671 is an equidigital number, since it uses as much as digits as its factorization.

28002671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 28002671 is about 5291.7550018874. The cubic root of 28002671 is about 303.6685525105.

The spelling of 28002671 in words is "twenty-eight million, two thousand, six hundred seventy-one".