8520836 has 6 divisors (see below), whose sum is σ = 14911470. Its totient is φ = 4260416.

The previous prime is 8520829. The next prime is 8520851. The reversal of 8520836 is 6380258.

It can be written as a sum of positive squares in only one way, i.e., 6400900 + 2119936 = 2530^2 + 1456^2 .

It is a super-2 number, since 2×8520836² = 145209292277792, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 1065101 + ... + 1065108.

It is an arithmetic number, because the mean of its divisors is an integer number (2485245).

Almost surely, 2^8520836 is an apocalyptic number.

It is an amenable number.

8520836 is a deficient number, since it is larger than the sum of its proper divisors (6390634).

8520836 is a wasteful number, since it uses less digits than its factorization.

8520836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2130213 (or 2130211 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 8520836 is about 2919.0471047929. The cubic root of 8520836 is about 204.2493746445.

The spelling of 8520836 in words is "eight million, five hundred twenty thousand, eight hundred thirty-six".