8005821524 has 12 divisors (see below), whose sum is σ = 14202108564. Its totient is φ = 3948076224.

The previous prime is 8005821497. The next prime is 8005821547. The reversal of 8005821524 is 4251285008.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2486817424 + 5519004100 = 49868^2 + 74290^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13708307 + ... + 13708890.

It is an arithmetic number, because the mean of its divisors is an integer number (1183509047).

Almost surely, 2^8005821524 is an apocalyptic number.

It is an amenable number.

8005821524 is a deficient number, since it is larger than the sum of its proper divisors (6196287040).

8005821524 is a wasteful number, since it uses less digits than its factorization.

8005821524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27417274 (or 27417272 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 35.

The square root of 8005821524 is about 89475.2564902722. The cubic root of 8005821524 is about 2000.4850093734.

The spelling of 8005821524 in words is "eight billion, five million, eight hundred twenty-one thousand, five hundred twenty-four".