8247557428 has 24 divisors (see below), whose sum is σ = 16288282080. Its totient is φ = 3619617120.

The previous prime is 8247557401. The next prime is 8247557467.

8247557428 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3230526 + ... + 3233077.

It is an arithmetic number, because the mean of its divisors is an integer number (678678420).

Almost surely, 2^8247557428 is an apocalyptic number.

It is an amenable number.

8247557428 is a deficient number, since it is larger than the sum of its proper divisors (8040724652).

8247557428 is a wasteful number, since it uses less digits than its factorization.

8247557428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6463647 (or 6463645 counting only the distinct ones).

The product of its digits is 5017600, while the sum is 52.

The square root of 8247557428 is about 90816.0637112180. The cubic root of 8247557428 is about 2020.4205760879.

The spelling of 8247557428 in words is "eight billion, two hundred forty-seven million, five hundred fifty-seven thousand, four hundred twenty-eight".