7828528805 has 6 divisors (see below), whose sum is σ = 9394471986. Its totient is φ = 6262664768.

The previous prime is 7828528777. The next prime is 7828528831. The reversal of 7828528805 is 5088258287.

It can be written as a sum of positive squares in 3 ways, for example, as 1428688804 + 6399840001 = 37798^2 + 79999^2 .

It is not a de Polignac number, because 7828528805 - 2¹⁴ = 7828512421 is a prime.

It is a super-2 number, since 2×7828528805² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 178061 + ... + 217629.

It is an arithmetic number, because the mean of its divisors is an integer number (1565745331).

Almost surely, 2^7828528805 is an apocalyptic number.

It is an amenable number.

7828528805 is a deficient number, since it is larger than the sum of its proper divisors (1565943181).

7828528805 is an frugal number, since it uses more digits than its factorization.

7828528805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79143 (or 39574 counting only the distinct ones).

The product of its (nonzero) digits is 2867200, while the sum is 53.

The square root of 7828528805 is about 88478.9738016892. The cubic root of 7828528805 is about 1985.6074088582.

The spelling of 7828528805 in words is "seven billion, eight hundred twenty-eight million, five hundred twenty-eight thousand, eight hundred five".