8728387 has 2 divisors, whose sum is σ = 8728388. Its totient is φ = 8728386.

The previous prime is 8728381. The next prime is 8728397. The reversal of 8728387 is 7838278.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8728387 is a prime.

It is not a weakly prime, because it can be changed into another prime (8728381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4364193 + 4364194.

It is an arithmetic number, because the mean of its divisors is an integer number (4364194).

Almost surely, 2^8728387 is an apocalyptic number.

8728387 is a deficient number, since it is larger than the sum of its proper divisors (1).

8728387 is an equidigital number, since it uses as much as digits as its factorization.

8728387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 150528, while the sum is 43.

The square root of 8728387 is about 2954.3843690353. The cubic root of 8728387 is about 205.8944616024.

The spelling of 8728387 in words is "eight million, seven hundred twenty-eight thousand, three hundred eighty-seven".