8728530251 has 32 divisors (see below), whose sum is σ = 10801436160. Its totient is φ = 6885305856.

The previous prime is 8728530227. The next prime is 8728530253. The reversal of 8728530251 is 1520358278.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8728530251 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8728530199 and 8728530208.

It is not an unprimeable number, because it can be changed into a prime (8728530253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4659251 + ... + 4661123.

It is an arithmetic number, because the mean of its divisors is an integer number (337544880).

Almost surely, 2^8728530251 is an apocalyptic number.

8728530251 is a deficient number, since it is larger than the sum of its proper divisors (2072905909).

8728530251 is a wasteful number, since it uses less digits than its factorization.

8728530251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2883.

The product of its (nonzero) digits is 134400, while the sum is 41.

The square root of 8728530251 is about 93426.6035505947. The cubic root of 8728530251 is about 2058.9558798177.

The spelling of 8728530251 in words is "eight billion, seven hundred twenty-eight million, five hundred thirty thousand, two hundred fifty-one".