28865479 has 2 divisors, whose sum is σ = 28865480. Its totient is φ = 28865478.

The previous prime is 28865467. The next prime is 28865519. The reversal of 28865479 is 97456882.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28865479 - 2¹³ = 28857287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28875479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14432739 + 14432740.

It is an arithmetic number, because the mean of its divisors is an integer number (14432740).

Almost surely, 2^28865479 is an apocalyptic number.

28865479 is a deficient number, since it is larger than the sum of its proper divisors (1).

28865479 is an equidigital number, since it uses as much as digits as its factorization.

28865479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 967680, while the sum is 49.

The square root of 28865479 is about 5372.6603279939. The cubic root of 28865479 is about 306.7558988652.

The spelling of 28865479 in words is "twenty-eight million, eight hundred sixty-five thousand, four hundred seventy-nine".