7828830257 has 2 divisors, whose sum is σ = 7828830258. Its totient is φ = 7828830256.

The previous prime is 7828830223. The next prime is 7828830263. The reversal of 7828830257 is 7520388287.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6566022961 + 1262807296 = 81031^2 + 35536^2 .

It is an emirp because it is prime and its reverse (7520388287) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7828830257 - 2²⁰ = 7827781681 is a prime.

It is a super-2 number, since 2×7828830257² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7828839257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3914415128 + 3914415129.

It is an arithmetic number, because the mean of its divisors is an integer number (3914415129).

Almost surely, 2^7828830257 is an apocalyptic number.

It is an amenable number.

7828830257 is a deficient number, since it is larger than the sum of its proper divisors (1).

7828830257 is an equidigital number, since it uses as much as digits as its factorization.

7828830257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1505280, while the sum is 50.

The square root of 7828830257 is about 88480.6773086644. The cubic root of 7828830257 is about 1985.6328950280.

The spelling of 7828830257 in words is "seven billion, eight hundred twenty-eight million, eight hundred thirty thousand, two hundred fifty-seven".