28038347 has 2 divisors, whose sum is σ = 28038348. Its totient is φ = 28038346.

The previous prime is 28038337. The next prime is 28038349. The reversal of 28038347 is 74383082.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28038347 - 2¹⁰ = 28037323 is a prime.

It is a super-2 number, since 2×28038347² = 1572297804984818, which contains 22 as substring.

Together with 28038349, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28038349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14019173 + 14019174.

It is an arithmetic number, because the mean of its divisors is an integer number (14019174).

Almost surely, 2^28038347 is an apocalyptic number.

28038347 is a deficient number, since it is larger than the sum of its proper divisors (1).

28038347 is an equidigital number, since it uses as much as digits as its factorization.

28038347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 28038347 is about 5295.1248332782. The cubic root of 28038347 is about 303.7974578538.

The spelling of 28038347 in words is "twenty-eight million, thirty-eight thousand, three hundred forty-seven".