8428251 has 16 divisors (see below), whose sum is σ = 12174624. Its totient is φ = 5155584.

The previous prime is 8428237. The next prime is 8428289. The reversal of 8428251 is 1528248.

It is not a de Polignac number, because 8428251 - 2⁹ = 8427739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8428201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7135 + ... + 8231.

It is an arithmetic number, because the mean of its divisors is an integer number (760914).

Almost surely, 2^8428251 is an apocalyptic number.

8428251 is a deficient number, since it is larger than the sum of its proper divisors (3746373).

8428251 is a wasteful number, since it uses less digits than its factorization.

8428251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1310.

The product of its digits is 5120, while the sum is 30.

The square root of 8428251 is about 2903.1450187684. The cubic root of 8428251 is about 203.5069069408.

The spelling of 8428251 in words is "eight million, four hundred twenty-eight thousand, two hundred fifty-one".