9728519 has 2 divisors, whose sum is σ = 9728520. Its totient is φ = 9728518.

The previous prime is 9728503. The next prime is 9728527. The reversal of 9728519 is 9158279.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9728519 - 2⁴ = 9728503 is a prime.

It is a super-2 number, since 2×9728519² = 189288163866722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9728419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4864259 + 4864260.

It is an arithmetic number, because the mean of its divisors is an integer number (4864260).

Almost surely, 2^9728519 is an apocalyptic number.

9728519 is a deficient number, since it is larger than the sum of its proper divisors (1).

9728519 is an equidigital number, since it uses as much as digits as its factorization.

9728519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 41.

The square root of 9728519 is about 3119.0573896612. The cubic root of 9728519 is about 213.4759281582.

The spelling of 9728519 in words is "nine million, seven hundred twenty-eight thousand, five hundred nineteen".