8428531 has 8 divisors (see below), whose sum is σ = 8751600. Its totient is φ = 8107680.

The previous prime is 8428517. The next prime is 8428547. The reversal of 8428531 is 1358248.

8428531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8428531 - 2⁷ = 8428403 is a prime.

It is a super-2 number, since 2×8428531² = 142080269635922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8428493 and 8428502.

It is not an unprimeable number, because it can be changed into a prime (8428501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14476 + ... + 15046.

It is an arithmetic number, because the mean of its divisors is an integer number (1093950).

Almost surely, 2^8428531 is an apocalyptic number.

8428531 is a deficient number, since it is larger than the sum of its proper divisors (323069).

8428531 is a wasteful number, since it uses less digits than its factorization.

8428531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109.

The product of its digits is 7680, while the sum is 31.

The square root of 8428531 is about 2903.1932419321. The cubic root of 8428531 is about 203.5091605243.

The spelling of 8428531 in words is "eight million, four hundred twenty-eight thousand, five hundred thirty-one".