28817479 has 2 divisors, whose sum is σ = 28817480. Its totient is φ = 28817478.

The previous prime is 28817473. The next prime is 28817489. The reversal of 28817479 is 97471882.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28817479 - 2⁹ = 28816967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28817473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14408739 + 14408740.

It is an arithmetic number, because the mean of its divisors is an integer number (14408740).

Almost surely, 2^28817479 is an apocalyptic number.

28817479 is a deficient number, since it is larger than the sum of its proper divisors (1).

28817479 is an equidigital number, since it uses as much as digits as its factorization.

28817479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 225792, while the sum is 46.

The square root of 28817479 is about 5368.1914086590. The cubic root of 28817479 is about 306.5857711693.

The spelling of 28817479 in words is "twenty-eight million, eight hundred seventeen thousand, four hundred seventy-nine".