28299347 has 2 divisors, whose sum is σ = 28299348. Its totient is φ = 28299346.

The previous prime is 28299317. The next prime is 28299371. The reversal of 28299347 is 74399282.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28299347 - 2⁸ = 28299091 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 28299298 and 28299307.

It is not a weakly prime, because it can be changed into another prime (28299317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14149673 + 14149674.

It is an arithmetic number, because the mean of its divisors is an integer number (14149674).

Almost surely, 2^28299347 is an apocalyptic number.

28299347 is a deficient number, since it is larger than the sum of its proper divisors (1).

28299347 is an equidigital number, since it uses as much as digits as its factorization.

28299347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 44.

The square root of 28299347 is about 5319.7130561714. The cubic root of 28299347 is about 304.7371990478.

The spelling of 28299347 in words is "twenty-eight million, two hundred ninety-nine thousand, three hundred forty-seven".