9728867 has 2 divisors, whose sum is σ = 9728868. Its totient is φ = 9728866.

The previous prime is 9728861. The next prime is 9728881. The reversal of 9728867 is 7688279.

9728867 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9728867 - 2⁸ = 9728611 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9728861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4864433 + 4864434.

It is an arithmetic number, because the mean of its divisors is an integer number (4864434).

Almost surely, 2^9728867 is an apocalyptic number.

9728867 is a deficient number, since it is larger than the sum of its proper divisors (1).

9728867 is an equidigital number, since it uses as much as digits as its factorization.

9728867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 338688, while the sum is 47.

The square root of 9728867 is about 3119.1131752471. The cubic root of 9728867 is about 213.4784735521.

The spelling of 9728867 in words is "nine million, seven hundred twenty-eight thousand, eight hundred sixty-seven".