28989071 has 2 divisors, whose sum is σ = 28989072. Its totient is φ = 28989070.

The previous prime is 28989049. The next prime is 28989101. The reversal of 28989071 is 17098982.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28989071 - 2⁶ = 28989007 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 (28989011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14494535 + 14494536.

It is an arithmetic number, because the mean of its divisors is an integer number (14494536).

Almost surely, 2^28989071 is an apocalyptic number.

28989071 is a deficient number, since it is larger than the sum of its proper divisors (1).

28989071 is an equidigital number, since it uses as much as digits as its factorization.

28989071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 44.

The square root of 28989071 is about 5384.1499793375. The cubic root of 28989071 is about 307.1930830634.

The spelling of 28989071 in words is "twenty-eight million, nine hundred eighty-nine thousand, seventy-one".