8520834 has 16 divisors (see below), whose sum is σ = 19476288. Its totient is φ = 2434512.

The previous prime is 8520829. The next prime is 8520851. The reversal of 8520834 is 4380258.

It is a super-2 number, since 2×8520834² = 145209224111112, which contains 22 as substring.

It is an Ulam number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101397 + ... + 101480.

It is an arithmetic number, because the mean of its divisors is an integer number (1217268).

Almost surely, 2^8520834 is an apocalyptic number.

8520834 is an abundant number, since it is smaller than the sum of its proper divisors (10955454).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8520834 is a wasteful number, since it uses less digits than its factorization.

8520834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202889.

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 8520834 is about 2919.0467622154. The cubic root of 8520834 is about 204.2493586641.

The spelling of 8520834 in words is "eight million, five hundred twenty thousand, eight hundred thirty-four".