28490071 has 2 divisors, whose sum is σ = 28490072. Its totient is φ = 28490070.

The previous prime is 28490069. The next prime is 28490083. The reversal of 28490071 is 17009482.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28490071 - 2¹ = 28490069 is a prime.

Together with 28490069, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28490041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14245035 + 14245036.

It is an arithmetic number, because the mean of its divisors is an integer number (14245036).

Almost surely, 2^28490071 is an apocalyptic number.

28490071 is a deficient number, since it is larger than the sum of its proper divisors (1).

28490071 is an equidigital number, since it uses as much as digits as its factorization.

28490071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 28490071 is about 5337.6091089551. The cubic root of 28490071 is about 305.4202609304.

The spelling of 28490071 in words is "twenty-eight million, four hundred ninety thousand, seventy-one".