28253747 has 2 divisors, whose sum is σ = 28253748. Its totient is φ = 28253746.

The previous prime is 28253713. The next prime is 28253749. The reversal of 28253747 is 74735282.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28253747 - 2¹⁸ = 27991603 is a prime.

Together with 28253749, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28253747.

It is not a weakly prime, because it can be changed into another prime (28253749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14126873 + 14126874.

It is an arithmetic number, because the mean of its divisors is an integer number (14126874).

Almost surely, 2^28253747 is an apocalyptic number.

28253747 is a deficient number, since it is larger than the sum of its proper divisors (1).

28253747 is an equidigital number, since it uses as much as digits as its factorization.

28253747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 94080, while the sum is 38.

The square root of 28253747 is about 5315.4253827892. The cubic root of 28253747 is about 304.5734321746.

The spelling of 28253747 in words is "twenty-eight million, two hundred fifty-three thousand, seven hundred forty-seven".